After domain migrations, new accounts are created in Forms (even if not in the repository that Forms is synced with). The old accounts show a status of invalid with the old domain in the FQDN.

Like this

But when I go to the monitor tab and choose the tasks subtab, then search for tasks assigned to the invalid account it does not show the invalid account in the list or allow me to enter the FQDN directly.

So how do I find the tasks assigned to the invalid account?

I can understand why I would be restricted from choosing an invalid account for assigning a new task, but if something is already assigned to an invalid account I should still be able to find it when searching for that account name.

Similar to how you can still search for a document created by a user that no longer exists.