The message below is reported in the MTA (Mail Target Agent) log when the agent attempts to move a mailbox:
CMBMConn::SetMailboxInfoE2K TraceMsg 6270 Moving mailbox '/o=EXNA/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=test..user' in progress. Check move request wasn't executed because time hasn't approached
The MTA does not extend the scope of the PowerShell move cmdlet to the entire AD forest.
Download and install the latest QMM for Exchange hotfix.