While utilizing Resource Updating Manager to Move a workstation, the Move takes place but the last logged on user is not set or is set incorrectly.
The RUM Move log also contains the following log entries
6/7/2016 11:36:34 AM 5100 Looking up account in migration project database on controller by sAMAccountName: %Username%.
6/7/2016 11:36:34 AM 5100 Initializing connection to Migration Manager RUM Controller Service at \\%RUMSERVER%.
6/7/2016 11:36:34 AM 5100 Closing connection to Migration Manager RUM Controller Service.
6/7/2016 11:36:34 AM 5100 Account not found.
Resource Update Manager is dependent on NetBios communication and if Full Qualified Names are Utilized lookups may be unsuccessful.
When specifying the target Domain in the Create Move Task wizard enter the NetBios name of the Domain and not the FQDN.