We upgraded from Xarios Phone Manager v3 to Mitel Phone Manager v4 last week.
We've had a few teething issues, like the lack of call banner field customisation for "Standard (legacy)" licenses, the licenses in use count going totally out of sync until rebooting the server and the lack of options that are available when importing into directories from an external source (in version 3 it was possible to clear the directory before the import, to prevent stale/orphaned entries).
Are you use Mitel Phone Manager 4? Could you tell me what version you're on? We're on 4.2.4 (build 4.2.3144.3). I'm hoping that there's a newer build that already had some of these bugs fixed, but so far Mitel/Xarios support has been very, slow.
Thanks,
Matty Brown.