User Sync - Serious Error


I have a serious error in so far User Sync keeps overwriting my admin name on the destination site, with any new addition added to the source site. The source site is a directory listings which simply registers people on the site as a subscriber. On the source site as admin I have to vet the listing before it goes live, but for some reason this is happening, and the only way I can change it is using phpmyadmin. It's really embrassing.