I have tried to clean up dashboards in operator console-> settings-> dashboard designer, but they keep returning.
Legacy Dashboards created in UIM 7.x/8.x and migrated to html5 dashboards are getting recreated after deletion from dashboard designer.
Release : 20.3 or any version post 8.31
Component : UIM OPERATOR CONSOLE - DASHBOARDS/DESIGNER
The migrator job upon wasp restart is inserting the legacy dashboards to the umpdashboard table. Unfortunately, the status of the migration is not maintained anywhere. Due to this reason, when the legacy dashboard is first migrated and then deleted, the migration is going to trigger again and inserts the dashboard entry back to the umpdashboard table. Since the dashboard definition is persisted in the tbnDashboard table, the definition of the dashboard is getting copied to the umpDashboard table.