Okay, here are the logs. And that's what if have done:

1. * Create new user synctest on the Mac
2. * Create one address book entry and two calendar events in two different calendars (Private and Büro)
3. * Add N95 in isync, sync data to N95 8GB, deleting the data on the phone. Tell isync to sync both calendars and add new events from the phone to Private.
4. * Add place to to calendar entry in Büro on the phone
5. * Sync
6. * Add town to address book entry on the phone
7. * Sync

I am using version 2.1 of the plugin from Nokia.
Both the Mac and the phone use german locale. Is this a problem for you?

Unlike the N900 plugin, the N95 plugin will not create a duplicate entry of the Büro events in Privat, but sync the event correctly. Also it will touch the custom label in the address book.