Q: Is there a problem with running /FORCEREBASESUPPRESSALLUPDATES against all mailboxes? I need to know if I should identify/separate out resource mailboxes and run them first. KB 933146 isn't clear on that.
A: here is the recommended procedure, identify resource mailboxes
run /FORCEREBASESUPPRESSALLUPDATES for resource mailboxes only. Then, for normal mailboxes/organizers for those resource mailboxes, run the tzmove in normal mode. With this procedure, since resource mailboxes are already in correct timeslot, and when you run tzmove in normal mode against other mailboxes, the resource mailbox looks at the update and does not consider it since the meeting is already in the correct timeslot