I have two SharePoint 2010 farms on the same domain (dev and prod). Both have the same configuration settings for User Profile import. However, the number of items in the prod environment is more than the dev environment (661 versus 648). I can see items in the prod User Profiles that should be excluded based on the filter criteria. These items are not in the Dev environment.
Any suggestions on troubleshooting this? Have others seen similar behaviour? Both servers are in the same data centre and talking to the same domain controller (as far as I can tell)