Zenoss 2.3.3 error moving device organizers

I encountered an interesting error today with Zenoss 2.3.3 (yes, 2.4 has been out for some time, but we've been having trouble getting a clean upgrade process). I had the following device classes with devices:

/Server/Windows/Sync/DatacenterA
- device1
- device2
- device3
/Server/Windows/Sync/DatacenterB
- device4
- device5
- device6

As these were all production machines, I wanted to differentiate them from the other dev and QA machines. I created the organizer /Server/Windows/Sync/Production and moved the ../DatacenterA and ../DatacenterB organizers with their devices under the new /Server/Windows/Sync/Production and...

...everything broke for the moved devices. All zencommand and zenperfsnmp-based monitoring just stopped cold. When starting zenperfsnmp in debug mode, I noticed errors on its first run like:

2009-07-27 17:15:45 WARNING zen.zenperfsnmp: Error loading config for devices ['device1', 'device2']
2009-07-27 17:15:45 WARNING zen.zenperfsnmp: Error loading config for devices ['device3', device4']
2009-07-27 17:15:45 WARNING zen.zenperfsnmp: Error loading config for devices ['device5', device6']

To correct this, I ended up moving the organizers back to their original locations, creating new organizers with the structure I wanted, and moving the individual devices (not the organizers) to the new organizer structure.

Now if I could just get this issue fixed I'd have no more zenperfsnmp/zencommand mysteries!