diff --git a/app/controllers/web_migrate.php b/app/controllers/web_migrate.php
index 7b8def386b4edae395bc230593638e1fc7aeec6c..af229590f2c2c2e87d17e6fa6bc51caedbc2a5a0 100644
--- a/app/controllers/web_migrate.php
+++ b/app/controllers/web_migrate.php
@@ -107,6 +107,6 @@ class WebMigrateController extends StudipController
 
         $widget = Sidebar::get()->addWidget(new SidebarWidget());
         $widget->setTitle(_('Aktueller Versionsstand'));
-        $widget->addElement(new WidgetElement($this->version->get()));
+        $widget->addElement(new WidgetElement($this->version->get($this->branch)));
     }
 }
diff --git a/db/migrations/100_step00248_chat_extinction.php b/db/migrations/1.100_step00248_chat_extinction.php
similarity index 100%
rename from db/migrations/100_step00248_chat_extinction.php
rename to db/migrations/1.100_step00248_chat_extinction.php
diff --git a/db/migrations/101_step00246_blubber.php b/db/migrations/1.101_step00246_blubber.php
similarity index 100%
rename from db/migrations/101_step00246_blubber.php
rename to db/migrations/1.101_step00246_blubber.php
diff --git a/db/migrations/102_remove_guestbook_migration.php b/db/migrations/1.102_remove_guestbook_migration.php
similarity index 100%
rename from db/migrations/102_remove_guestbook_migration.php
rename to db/migrations/1.102_remove_guestbook_migration.php
diff --git a/db/migrations/104_setup_cronjobs.php b/db/migrations/1.104_setup_cronjobs.php
similarity index 100%
rename from db/migrations/104_setup_cronjobs.php
rename to db/migrations/1.104_setup_cronjobs.php
diff --git a/db/migrations/105_step_00247_forum.php b/db/migrations/1.105_step_00247_forum.php
similarity index 100%
rename from db/migrations/105_step_00247_forum.php
rename to db/migrations/1.105_step_00247_forum.php
diff --git a/db/migrations/106_step_00247_forum_data_migration.php b/db/migrations/1.106_step_00247_forum_data_migration.php
similarity index 100%
rename from db/migrations/106_step_00247_forum_data_migration.php
rename to db/migrations/1.106_step_00247_forum_data_migration.php
diff --git a/db/migrations/107_step00247_forum_performance.php b/db/migrations/1.107_step00247_forum_performance.php
similarity index 100%
rename from db/migrations/107_step00247_forum_performance.php
rename to db/migrations/1.107_step00247_forum_performance.php
diff --git a/db/migrations/108_visibilityapi.php b/db/migrations/1.108_visibilityapi.php
similarity index 100%
rename from db/migrations/108_visibilityapi.php
rename to db/migrations/1.108_visibilityapi.php
diff --git a/db/migrations/109_init_custom_blubber_streams.php b/db/migrations/1.109_init_custom_blubber_streams.php
similarity index 100%
rename from db/migrations/109_init_custom_blubber_streams.php
rename to db/migrations/1.109_init_custom_blubber_streams.php
diff --git a/db/migrations/10_image_proxy.php b/db/migrations/1.10_image_proxy.php
similarity index 100%
rename from db/migrations/10_image_proxy.php
rename to db/migrations/1.10_image_proxy.php
diff --git a/db/migrations/110_scm_add_position.php b/db/migrations/1.110_scm_add_position.php
similarity index 100%
rename from db/migrations/110_scm_add_position.php
rename to db/migrations/1.110_scm_add_position.php
diff --git a/db/migrations/111_step_3574_domain.php b/db/migrations/1.111_step_3574_domain.php
similarity index 100%
rename from db/migrations/111_step_3574_domain.php
rename to db/migrations/1.111_step_3574_domain.php
diff --git a/db/migrations/113_init_mailqueue.php b/db/migrations/1.113_init_mailqueue.php
similarity index 100%
rename from db/migrations/113_init_mailqueue.php
rename to db/migrations/1.113_init_mailqueue.php
diff --git a/db/migrations/114_create_table_blubber_reshares.php b/db/migrations/1.114_create_table_blubber_reshares.php
similarity index 100%
rename from db/migrations/114_create_table_blubber_reshares.php
rename to db/migrations/1.114_create_table_blubber_reshares.php
diff --git a/db/migrations/115_performance_tic_3759.php b/db/migrations/1.115_performance_tic_3759.php
similarity index 100%
rename from db/migrations/115_performance_tic_3759.php
rename to db/migrations/1.115_performance_tic_3759.php
diff --git a/db/migrations/116_step_00263_inst_gendering.php b/db/migrations/1.116_step_00263_inst_gendering.php
similarity index 100%
rename from db/migrations/116_step_00263_inst_gendering.php
rename to db/migrations/1.116_step_00263_inst_gendering.php
diff --git a/db/migrations/117_forum_add_close.php b/db/migrations/1.117_forum_add_close.php
similarity index 100%
rename from db/migrations/117_forum_add_close.php
rename to db/migrations/1.117_forum_add_close.php
diff --git a/db/migrations/118_forum_sticky_posts.php b/db/migrations/1.118_forum_sticky_posts.php
similarity index 100%
rename from db/migrations/118_forum_sticky_posts.php
rename to db/migrations/1.118_forum_sticky_posts.php
diff --git a/db/migrations/119_init_termin_related_groups_table.php b/db/migrations/1.119_init_termin_related_groups_table.php
similarity index 100%
rename from db/migrations/119_init_termin_related_groups_table.php
rename to db/migrations/1.119_init_termin_related_groups_table.php
diff --git a/db/migrations/11_lock_rulez.php b/db/migrations/1.11_lock_rulez.php
similarity index 100%
rename from db/migrations/11_lock_rulez.php
rename to db/migrations/1.11_lock_rulez.php
diff --git a/db/migrations/120_create_open_graph_data_table.php b/db/migrations/1.120_create_open_graph_data_table.php
similarity index 100%
rename from db/migrations/120_create_open_graph_data_table.php
rename to db/migrations/1.120_create_open_graph_data_table.php
diff --git a/db/migrations/121_step_00266_forced_lock_rules.php b/db/migrations/1.121_step_00266_forced_lock_rules.php
similarity index 100%
rename from db/migrations/121_step_00266_forced_lock_rules.php
rename to db/migrations/1.121_step_00266_forced_lock_rules.php
diff --git a/db/migrations/122_add_seminar_id_to_folder.php b/db/migrations/1.122_add_seminar_id_to_folder.php
similarity index 100%
rename from db/migrations/122_add_seminar_id_to_folder.php
rename to db/migrations/1.122_add_seminar_id_to_folder.php
diff --git a/db/migrations/123_tic_3993_remove_dont_delete.php b/db/migrations/1.123_tic_3993_remove_dont_delete.php
similarity index 100%
rename from db/migrations/123_tic_3993_remove_dont_delete.php
rename to db/migrations/1.123_tic_3993_remove_dont_delete.php
diff --git a/db/migrations/124_step_00255_important_semnumber.php b/db/migrations/1.124_step_00255_important_semnumber.php
similarity index 100%
rename from db/migrations/124_step_00255_important_semnumber.php
rename to db/migrations/1.124_step_00255_important_semnumber.php
diff --git a/db/migrations/125_repair_statusgroup_user_numberation.php b/db/migrations/1.125_repair_statusgroup_user_numberation.php
similarity index 100%
rename from db/migrations/125_repair_statusgroup_user_numberation.php
rename to db/migrations/1.125_repair_statusgroup_user_numberation.php
diff --git a/db/migrations/126_tic_4044_invisible_studygroups.php b/db/migrations/1.126_tic_4044_invisible_studygroups.php
similarity index 100%
rename from db/migrations/126_tic_4044_invisible_studygroups.php
rename to db/migrations/1.126_tic_4044_invisible_studygroups.php
diff --git a/db/migrations/127_setup_api.php b/db/migrations/1.127_setup_api.php
similarity index 100%
rename from db/migrations/127_setup_api.php
rename to db/migrations/1.127_setup_api.php
diff --git a/db/migrations/128_step00240_coursesets.php b/db/migrations/1.128_step00240_coursesets.php
similarity index 100%
rename from db/migrations/128_step00240_coursesets.php
rename to db/migrations/1.128_step00240_coursesets.php
diff --git a/db/migrations/129_wysiwyg_config_option.php b/db/migrations/1.129_wysiwyg_config_option.php
similarity index 100%
rename from db/migrations/129_wysiwyg_config_option.php
rename to db/migrations/1.129_wysiwyg_config_option.php
diff --git a/db/migrations/12_step_120_userpic.php b/db/migrations/1.12_step_120_userpic.php
similarity index 100%
rename from db/migrations/12_step_120_userpic.php
rename to db/migrations/1.12_step_120_userpic.php
diff --git a/db/migrations/130_step_00267_preliminary_accounts.php b/db/migrations/1.130_step_00267_preliminary_accounts.php
similarity index 100%
rename from db/migrations/130_step_00267_preliminary_accounts.php
rename to db/migrations/1.130_step_00267_preliminary_accounts.php
diff --git a/db/migrations/131_score_config_option.php b/db/migrations/1.131_score_config_option.php
similarity index 100%
rename from db/migrations/131_score_config_option.php
rename to db/migrations/1.131_score_config_option.php
diff --git a/db/migrations/132_step_00268_event_log.php b/db/migrations/1.132_step_00268_event_log.php
similarity index 100%
rename from db/migrations/132_step_00268_event_log.php
rename to db/migrations/1.132_step_00268_event_log.php
diff --git a/db/migrations/133_tic_4072_new_password_hashing.php b/db/migrations/1.133_tic_4072_new_password_hashing.php
similarity index 100%
rename from db/migrations/133_tic_4072_new_password_hashing.php
rename to db/migrations/1.133_tic_4072_new_password_hashing.php
diff --git a/db/migrations/134_step_00269_plugin_roles.php b/db/migrations/1.134_step_00269_plugin_roles.php
similarity index 100%
rename from db/migrations/134_step_00269_plugin_roles.php
rename to db/migrations/1.134_step_00269_plugin_roles.php
diff --git a/db/migrations/135_tic_4011_remove_teilnehmer_view.php b/db/migrations/1.135_tic_4011_remove_teilnehmer_view.php
similarity index 100%
rename from db/migrations/135_tic_4011_remove_teilnehmer_view.php
rename to db/migrations/1.135_tic_4011_remove_teilnehmer_view.php
diff --git a/db/migrations/136_wiki_remove_camel_case.php b/db/migrations/1.136_wiki_remove_camel_case.php
similarity index 100%
rename from db/migrations/136_wiki_remove_camel_case.php
rename to db/migrations/1.136_wiki_remove_camel_case.php
diff --git a/db/migrations/137_studygroup_invitations.php b/db/migrations/1.137_studygroup_invitations.php
similarity index 100%
rename from db/migrations/137_studygroup_invitations.php
rename to db/migrations/1.137_studygroup_invitations.php
diff --git a/db/migrations/138_create_tags_for_messaging.php b/db/migrations/1.138_create_tags_for_messaging.php
similarity index 100%
rename from db/migrations/138_create_tags_for_messaging.php
rename to db/migrations/1.138_create_tags_for_messaging.php
diff --git a/db/migrations/139_step00272_tours.php b/db/migrations/1.139_step00272_tours.php
similarity index 100%
rename from db/migrations/139_step00272_tours.php
rename to db/migrations/1.139_step00272_tours.php
diff --git a/db/migrations/13_remove_fields_from_extermine.php b/db/migrations/1.13_remove_fields_from_extermine.php
similarity index 100%
rename from db/migrations/13_remove_fields_from_extermine.php
rename to db/migrations/1.13_remove_fields_from_extermine.php
diff --git a/db/migrations/140_tic4450_archiv_protected_files.php b/db/migrations/1.140_tic4450_archiv_protected_files.php
similarity index 100%
rename from db/migrations/140_tic4450_archiv_protected_files.php
rename to db/migrations/1.140_tic4450_archiv_protected_files.php
diff --git a/db/migrations/141_tic4454_roomrequest_options.php b/db/migrations/1.141_tic4454_roomrequest_options.php
similarity index 100%
rename from db/migrations/141_tic4454_roomrequest_options.php
rename to db/migrations/1.141_tic4454_roomrequest_options.php
diff --git a/db/migrations/142_tic4463_remove_stm.php b/db/migrations/1.142_tic4463_remove_stm.php
similarity index 100%
rename from db/migrations/142_tic4463_remove_stm.php
rename to db/migrations/1.142_tic4463_remove_stm.php
diff --git a/db/migrations/143_step00249_my_courses_config.php b/db/migrations/1.143_step00249_my_courses_config.php
similarity index 100%
rename from db/migrations/143_step00249_my_courses_config.php
rename to db/migrations/1.143_step00249_my_courses_config.php
diff --git a/db/migrations/144_files.php b/db/migrations/1.144_files.php
similarity index 100%
rename from db/migrations/144_files.php
rename to db/migrations/1.144_files.php
diff --git a/db/migrations/145_tic4491_help_content.php b/db/migrations/1.145_tic4491_help_content.php
similarity index 100%
rename from db/migrations/145_tic4491_help_content.php
rename to db/migrations/1.145_tic4491_help_content.php
diff --git a/db/migrations/146_step_00253_startseite.php b/db/migrations/1.146_step_00253_startseite.php
similarity index 100%
rename from db/migrations/146_step_00253_startseite.php
rename to db/migrations/1.146_step_00253_startseite.php
diff --git a/db/migrations/148_tic_4520_sem_tree_display.php b/db/migrations/1.148_tic_4520_sem_tree_display.php
similarity index 100%
rename from db/migrations/148_tic_4520_sem_tree_display.php
rename to db/migrations/1.148_tic_4520_sem_tree_display.php
diff --git a/db/migrations/14_step_00123_admission2.php b/db/migrations/1.14_step_00123_admission2.php
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rename from db/migrations/14_step_00123_admission2.php
rename to db/migrations/1.14_step_00123_admission2.php
diff --git a/db/migrations/150_help_tours_and_content.php b/db/migrations/1.150_help_tours_and_content.php
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rename from db/migrations/150_help_tours_and_content.php
rename to db/migrations/1.150_help_tours_and_content.php
diff --git a/db/migrations/151_add_automatic_updates_to_plugins.php b/db/migrations/1.151_add_automatic_updates_to_plugins.php
similarity index 100%
rename from db/migrations/151_add_automatic_updates_to_plugins.php
rename to db/migrations/1.151_add_automatic_updates_to_plugins.php
diff --git a/db/migrations/152_tic_5117_course_member_admission.php b/db/migrations/1.152_tic_5117_course_member_admission.php
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rename from db/migrations/152_tic_5117_course_member_admission.php
rename to db/migrations/1.152_tic_5117_course_member_admission.php
diff --git a/db/migrations/153_tic_4163_add_studip_shortname.php b/db/migrations/1.153_tic_4163_add_studip_shortname.php
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rename from db/migrations/153_tic_4163_add_studip_shortname.php
rename to db/migrations/1.153_tic_4163_add_studip_shortname.php
diff --git a/db/migrations/154_recalculate_score.php b/db/migrations/1.154_recalculate_score.php
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rename from db/migrations/154_recalculate_score.php
rename to db/migrations/1.154_recalculate_score.php
diff --git a/db/migrations/155_tic_5170_clean_up.php b/db/migrations/1.155_tic_5170_clean_up.php
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rename from db/migrations/155_tic_5170_clean_up.php
rename to db/migrations/1.155_tic_5170_clean_up.php
diff --git a/db/migrations/156_tic_5204_add_datafield_type.php b/db/migrations/1.156_tic_5204_add_datafield_type.php
similarity index 100%
rename from db/migrations/156_tic_5204_add_datafield_type.php
rename to db/migrations/1.156_tic_5204_add_datafield_type.php
diff --git a/db/migrations/157_contact_rework.php b/db/migrations/1.157_contact_rework.php
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rename from db/migrations/157_contact_rework.php
rename to db/migrations/1.157_contact_rework.php
diff --git a/db/migrations/158_step_00283_calendar_sorm.php b/db/migrations/1.158_step_00283_calendar_sorm.php
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rename from db/migrations/158_step_00283_calendar_sorm.php
rename to db/migrations/1.158_step_00283_calendar_sorm.php
diff --git a/db/migrations/159_step_00275_plus.php b/db/migrations/1.159_step_00275_plus.php
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rename from db/migrations/159_step_00275_plus.php
rename to db/migrations/1.159_step_00275_plus.php
diff --git a/db/migrations/15_step_00129_email_restriction.php b/db/migrations/1.15_step_00129_email_restriction.php
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rename from db/migrations/15_step_00129_email_restriction.php
rename to db/migrations/1.15_step_00129_email_restriction.php
diff --git a/db/migrations/160_step_00283_update_calendar_settings.php b/db/migrations/1.160_step_00283_update_calendar_settings.php
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rename from db/migrations/160_step_00283_update_calendar_settings.php
rename to db/migrations/1.160_step_00283_update_calendar_settings.php
diff --git a/db/migrations/161_step_00284_help_editor.php b/db/migrations/1.161_step_00284_help_editor.php
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rename from db/migrations/161_step_00284_help_editor.php
rename to db/migrations/1.161_step_00284_help_editor.php
diff --git a/db/migrations/162_step_00283_calendar_user.php b/db/migrations/1.162_step_00283_calendar_user.php
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rename from db/migrations/162_step_00283_calendar_user.php
rename to db/migrations/1.162_step_00283_calendar_user.php
diff --git a/db/migrations/163_transfer_calpermission.php b/db/migrations/1.163_transfer_calpermission.php
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rename from db/migrations/163_transfer_calpermission.php
rename to db/migrations/1.163_transfer_calpermission.php
diff --git a/db/migrations/164_help_tours_en.php b/db/migrations/1.164_help_tours_en.php
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rename from db/migrations/164_help_tours_en.php
rename to db/migrations/1.164_help_tours_en.php
diff --git a/db/migrations/166_add_cache_operations_table.php b/db/migrations/1.166_add_cache_operations_table.php
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rename from db/migrations/166_add_cache_operations_table.php
rename to db/migrations/1.166_add_cache_operations_table.php
diff --git a/db/migrations/167_tic5661_setup_cronjob.php b/db/migrations/1.167_tic5661_setup_cronjob.php
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rename from db/migrations/167_tic5661_setup_cronjob.php
rename to db/migrations/1.167_tic5661_setup_cronjob.php
diff --git a/db/migrations/168_tic5661_add_config.php b/db/migrations/1.168_tic5661_add_config.php
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rename from db/migrations/168_tic5661_add_config.php
rename to db/migrations/1.168_tic5661_add_config.php
diff --git a/db/migrations/16_step_00126_embedding_flash_movies.php b/db/migrations/1.16_step_00126_embedding_flash_movies.php
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rename from db/migrations/16_step_00126_embedding_flash_movies.php
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diff --git a/db/migrations/170_step_00286_coursewizard.php b/db/migrations/1.170_step_00286_coursewizard.php
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rename from db/migrations/170_step_00286_coursewizard.php
rename to db/migrations/1.170_step_00286_coursewizard.php
diff --git a/db/migrations/171_open_personal_file_areas.php b/db/migrations/1.171_open_personal_file_areas.php
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rename from db/migrations/171_open_personal_file_areas.php
rename to db/migrations/1.171_open_personal_file_areas.php
diff --git a/db/migrations/172_tic_5961_add_config_default_sem.php b/db/migrations/1.172_tic_5961_add_config_default_sem.php
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rename from db/migrations/172_tic_5961_add_config_default_sem.php
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diff --git a/db/migrations/173_biest5982_fix_resources_objects_level.php b/db/migrations/1.173_biest5982_fix_resources_objects_level.php
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rename from db/migrations/173_biest5982_fix_resources_objects_level.php
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diff --git a/db/migrations/174_tic_6018_clean_news.php b/db/migrations/1.174_tic_6018_clean_news.php
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rename from db/migrations/174_tic_6018_clean_news.php
rename to db/migrations/1.174_tic_6018_clean_news.php
diff --git a/db/migrations/175_biest6024_fix_help_tours_en.php b/db/migrations/1.175_biest6024_fix_help_tours_en.php
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diff --git a/db/migrations/176_limit_mailqueue.php b/db/migrations/1.176_limit_mailqueue.php
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rename from db/migrations/98_user_data_to_config.php
rename to db/migrations/1.98_user_data_to_config.php
diff --git a/db/migrations/99_step00245_simpleormap.php b/db/migrations/1.99_step00245_simpleormap.php
similarity index 100%
rename from db/migrations/99_step00245_simpleormap.php
rename to db/migrations/1.99_step00245_simpleormap.php
diff --git a/db/migrations/09_step_00111_admission.php b/db/migrations/1.9_step_00111_admission.php
similarity index 100%
rename from db/migrations/09_step_00111_admission.php
rename to db/migrations/1.9_step_00111_admission.php
diff --git a/lib/classes/StudipCacheFactory.class.php b/lib/classes/StudipCacheFactory.class.php
index cc7be15dd434a5adfc6c731f6b5d36f5b4da77b0..5ce2985e2781c4fc90e68e5993d3f64c3b6633ef 100644
--- a/lib/classes/StudipCacheFactory.class.php
+++ b/lib/classes/StudipCacheFactory.class.php
@@ -189,7 +189,7 @@ class StudipCacheFactory
         # default class
         if (is_null($cache_class)) {
             $version = new DBSchemaVersion();
-            if ($version->get() < 224) {
+            if ($version->get(1) < 224) {
                 // db cache is not yet available, use StudipMemoryCache
                 return 'StudipMemoryCache';
             }
diff --git a/lib/migrations/DBSchemaVersion.php b/lib/migrations/DBSchemaVersion.php
index 207a804aee7744322c3192440cce51d3141befac..8217ec06edb44cedf2a5b1faa5f00cf50989115a 100644
--- a/lib/migrations/DBSchemaVersion.php
+++ b/lib/migrations/DBSchemaVersion.php
@@ -93,7 +93,8 @@ class DBSchemaVersion implements SchemaVersion
     private function initSchemaInfo()
     {
         if (!$this->branchSupported()) {
-            $query = "SELECT 0, version FROM schema_version WHERE domain = ?";
+            $branch = $this->domain === 'studip' ? 1 : 0;
+            $query = "SELECT $branch, version FROM schema_version WHERE domain = ?";
         } else {
             $query = "SELECT branch, version FROM schema_version WHERE domain = ? ORDER BY branch";
         }
@@ -101,8 +102,8 @@ class DBSchemaVersion implements SchemaVersion
         $statement->execute([$this->domain]);
         $versions = $statement->fetchAll(PDO::FETCH_COLUMN | PDO::FETCH_GROUP | PDO::FETCH_UNIQUE);
 
-        if ($versions) {
-            $this->versions = array_map('intval', $versions);
+        foreach ($versions as $branch => $version) {
+            $this->versions[$branch] = (int) $version;
         }
     }
 
@@ -114,7 +115,7 @@ class DBSchemaVersion implements SchemaVersion
      */
     public function get($branch = 0)
     {
-        return $this->versions[$branch ?: $this->branch];
+        return $this->versions[$branch];
     }
 
     /**
@@ -125,7 +126,7 @@ class DBSchemaVersion implements SchemaVersion
      */
     public function set($version, $branch = 0)
     {
-        $this->versions[$branch ?: $this->branch] = (int) $version;
+        $this->versions[$branch] = (int) $version;
 
         if (!$this->branchSupported()) {
             $query = "INSERT INTO schema_version (domain, version)
@@ -143,7 +144,7 @@ class DBSchemaVersion implements SchemaVersion
             $statement = DBManager::get()->prepare($query);
             $statement->execute([
                 $this->domain,
-                $branch ?: $this->branch,
+                $branch,
                 $version
             ]);
         }
@@ -164,14 +165,18 @@ class DBSchemaVersion implements SchemaVersion
 
         if ($result && $result->rowCount() > 0) {
             $backported_migrations = [
-                20200306, 20200306, 20200713, 20200811, 20200909,
-                20200910, 20201002, 20201103, 202011031, 20210317
+                20200306, 20200713, 20200811, 20200909, 20200910,
+                20201002, 20201103, 202011031, 20210317
             ];
 
             $query = "DELETE FROM schema_versions
                       WHERE domain = 'studip' AND version in (?)";
             $db->execute($query, [$backported_migrations]);
 
+            $query = "DELETE FROM schema_versions
+                      WHERE domain = 'studip' AND LENGTH(version) > 8";
+            $db->exec($query);
+
             $query = "CREATE TABLE schema_version (
                         domain VARCHAR(255) COLLATE latin1_bin NOT NULL,
                         branch VARCHAR(64) COLLATE latin1_bin NOT NULL DEFAULT '0',
@@ -187,6 +192,22 @@ class DBSchemaVersion implements SchemaVersion
 
             $query = "DROP TABLE schema_versions";
             $db->exec($query);
+
+            $schema_mapping = [
+                20190917 => 269,
+                20200307 => 285,
+                20200522 => 290,
+                20210603 => 328
+            ];
+
+            $query = "UPDATE schema_version SET branch = '1' WHERE domain = 'studip'";
+            $db->exec($query);
+
+            foreach ($schema_mapping as $old_version => $new_version) {
+                $query = "UPDATE schema_version SET version = ?
+                          WHERE domain = 'studip' AND version = ?";
+                $db->execute($query, [$new_version, $old_version]);
+            }
         }
     }
 }
diff --git a/lib/migrations/Migrator.php b/lib/migrations/Migrator.php
index eb0193a08dabec4177f67b6013b03d94e399eab3..a959317acca1138abef9864238a1e25304e0cfc8 100644
--- a/lib/migrations/Migrator.php
+++ b/lib/migrations/Migrator.php
@@ -194,16 +194,17 @@ class Migrator
     public function migrateTo($target_version)
     {
         $migrations = $this->relevantMigrations($target_version);
+        $target_branch = $this->schema_version->getBranch();
 
         # you're on the right version
         if (empty($migrations)) {
-            $this->log('You are already at %d.', $this->schema_version->get());
+            $this->log('You are already at %d.', $this->schema_version->get($target_branch));
             return;
         }
 
         $this->log(
             'Currently at version %d. Now migrating %s to %d.',
-            $this->schema_version->get(),
+            $this->schema_version->get($target_branch),
             $this->direction,
             max($this->target_versions)
         );