We have a lookup field that points to a custom entity. When using the "lookup more records" option to add an existing record, we have 3 fields displayed. When we type in the letters "bar" it should match one record for those 3 fields. Instead, it searches every field in the record and matches on OwnerID. We don't want a match on the owner of the record. The irony is if we type in "barba" it stops looking at OwnerID and matches the single person who has that match in the first name and email address fields.
How do I remove OwnerID from being searchable? I've changed the field setting in the custom entity by unchecking "searchable".