I found a fix. I narrowed my Search Base, used
(&(objectCategory=person)(objectClass=user)(
!(userAccountControl:1.2.840.113556.1.4.803:=2))) as the filter, and then
scheduled a Full Import to run at night. Today when I go to Manage Profile
Database it tells me there are 7810 users profiles but only lists 344 Active
user Profiles.