Changing SamAccountName post user migration with no sync running.

We need to change the SamAccountName from jdoe to john.doe. It's going to be easier for me to powershell this then undo  and change import file and resync. I ran a test making this change on several accounts, removed groups from users, reran group migration and groups were put back in place for the users. That tells me Quest can still communicate with the account with a SamAccountName change. Can someone confirm that there won't be any other issues Quest might face with making this change?