After i split a database, I tried the Filter by Form in one of my forms that is based on a query. Before the split, it used to fill up the drop down combo boxes, but now only offers the Is Null, Is Not Null options. The total number of records in the test mdb is 12, and the setting for the Tools | Options | List Display is 1000 records.
Is this a property of split mdbs? Or perhaps something else?