We had a similar issue reported earlier today, but by the time I was able to have a look, it had somehow resolved itself. I would be interested to see anyone else’s experience/feedback.
Both Schedule Manager and the Rooms and Resource Manager tasks rely on the data in NAB views to be there. Adding (or restoring) a new entry to the NAB does not mean the name is immediately visible to the tasks due to some performance throttles we have on some key views. They can be in the dB and visible to a Notes client immediately but they may not appear to tasks that use APIs to check for data.
This is a self correcting issue as at least one of you saw. When the tasks recheck later, the names appear and processing happens just fine.
If you do this you should rebuild the views used by the sched and rnrmgr tasks using these console commands: