It's ridiculous that Blackberry still haven't figured this out. What's the point of having multiple calendars if you then can't synch them?? I discovered this by accident when it seemed several of my meetings were missing.
I have a PC and a Curve 8320 and just upgraded to the BB OS 4.5. I liked the idea of using two calendars as to separate by business meetings from my other ones. But if I can't synch all of them I will need to go back to using only the one that does synch. And the workaround offered on Mark/Space was no help.