Contact categories problems.

[random_username]

Hello.

I've had a look though the forums but can't really find anything that covers this.
We're using Zimbra 5.0.7 and connector version 5.0.6. Things seem to work quite well but I have one user with hundreds of contacts who says that after syncing with Zimbra his contacts tend to loose their categorisation.
For example, he marked one contact as a neighbour and after a sync the contact moved back to undefined.
Does Zimbra support syncing Outlook contact categories, or is there a known issue with it?
I'm a Linux sys admin, so I'm afraid I don't even know enough about Outlook's behaviour to know if this is the sort of thing that happens with Outlook anyway.

I'd be glad to hear your opinions on this.