Is it safe to delete old migration sessions from the QMM GUI?
Deleting old migration sessions in QMM also removes the user mapping information about those users from the ADAM database. Unless you are also using directory synchronization for these users, this removal is permanent.
This means that resource updating will not update permissions/profiles for these users (they will not be included in the vmover.ini file), and other aspects of the migration may not function properly for these users. If this is not a concern (the session contained test users only, etc), then it is recommended to first undo the migration session, then delete it. This approach will also free up licenses (https://support.quest.com/SUPPORT/index?page=solution&id=SOL35169&pmv=true).
CR53937 was created for this issue.