Role Back after Major Exception

[nathaniel-chadwick]

Is your feature request related to a problem? Please describe.
If something goes wrong with the import, the items that did import successfully will still exist. Having a way for the import tool to rollback if something goes wrong, would be a nice addition. It would allow the end user to worry less about the content that is being added. The end user should take precaution regardless using backups.

Describe the solution you'd like
Potentially logging the items that have been added and removing them on fail

Describe alternatives you've considered
Adding this feature to the XbyK UMT. Would allow other migration tools based on the UMT to harness this feature

Additional context
N/A