Affecting only migrations from old version of plugin and only MSSQL DB
The problem: some of the MSSQL DB versions don’t support migration field type and the plugin doesn’t have direct access to the database, only through the active objects, which leads to incomplete migration.
The fix:
1. Execute this command on your Jira DB. The AO* tables are the plugin tables so no data will be corrupted/lost.
alter table AO_338ACC_TASK drop constraint df_AO_338ACC_TASK_GRADE;
2. Re-install the plugin.