I haven't seen this yet, but I bet I know what it is: Google is
replacing the invisible Unicode characters we use to delimit fields
(when using the "Preserve Address Book data" mode) with X's. Bad
Google!
To fix this, just turn switch Spanning Sync to Gmail compatibility
mode:
* Open the Spanning Sync pref pane
* In the Contacts tab, uncheck and then re-check the "Sync contacts"
checkbox
* Choose "Preserve Gmail compatibility"
* Click OK
* Make some small change to any contact in Address Book to force a
"push" sync
* After the sync completes, the Unicode characters will no longer
exist in Google and subsequent syncs to your iPhone should remove them
from your contacts there
Please let me know if you have any questions or run into any
problems.
Thanks,
Charlie