[neilm]

This si such an unusual problem, that it may be there isn't a fix for you. The reimport of contacts via Excel should have worked, at least for those contacts that synced previously.

The nature of your problem- some items won't sync despite reinstaling Activesync, Outlook, Contacts and Calendar items, and repairing the outlook.pst file strongly suggests there is something within those items preventing the synchronisation, rather than any fault with the system itself.

Is there anything at all that links the failed items? Were they imported from a previus phone; is journalling turned on for those; are there any categories assigned to those items, etc etc.

You have spent an inordinate amount of time trying to fix this, and now seem to be worse off at the end of it! Short of examining each item in a detailed view to see if there are any common fields involved, (look specifically at which item of data is entered into which Outlook field, paying particular attention to the various locations for Address, Name and Business name etc) you may need to re-enter the missing items manually (how many are there?)

I suspect that changing to another WM device willl show the same result; it may also be the same with another make of phone, if the contacts derive from Outlook.

It's cold comfort for you, but once your erroneous items are successfully synced, the system should work very well indeed. I suspect that any new items you create will sync correctly- the problem lies with some aspect of your historical data.