Notices

Hello,
Has anyone tried to sync N900/Maemo calendar with a Symbian 3 device via bluetooth?
Well C7 and N900 both have a utility that suggests this should be possible, and it actually worked for me for contacts:
Most of the info arrived safe and sound, largely unscrambled from N900 on C7.
The calendar, not so much - or better, no data at all.
I wouldn't be surprised if the calendar on C7 was a bit of a mess, as I thoughtlessly set it up for sync not only with N900, but for both OviSync AND Mail for Exchange, the result being 4 different calendars in the list:
"Personal", "MyCalendar", "N900", and "MfE", each being marked as "visible", with a different color each, but no corresponding entries to be seen in the actual calendar.
The only entries I can actually see are the ones I made directly on the C7 (marked blue, for "Personal" calendar. "Personally" though, I'd like them all to be just the one calendar, as I have just the one life and relative timeline...).
But the thing is, I tried to grab the calendar entries from N900 via bluetooth FIRST.
What went wrong there? Any hints?
Thanks, Ben