Maine Genealogist Article Title Only checkbox doesn't find those records

Select Maine Genealogist and "Article Title Only" checkbox and perform search. Results indicate 0 records found, but there are 425 records with that flag set.
Note: There are both "Article Title Only" (id=15, name="map") and "Article Title Only Filter" (id=177, name ="foot") attributes. Maine Genealogist is one of three collections with the "Article Title Only" attribute. The other two (Mayflower Descendant and American Ancestors Journal) work as expected.