Add ( ) to definition query. This issue is non reproduceable at 9.2 Beta.Test Data Example1) Definition query (infra): ( [TYPE] = 'CB' OR [TYPE] = 'MH')2) Definition query (taxmapgrid):( [MAP_SHEET] = '10' OR [MAP_SHEET] = '12')Without ( ) select by location will return all [TYPE] = 'CB' even if it extends past the taxmapgrid polygon.