Basecamp and RV 760

I have Basecamp 4.2.3 installed and have a RV 760 firmware 2.7. The RV 760 has a file of campground/RV Parks installed. When I connect the RV 760 to the computer the installed campground icons appear on the map and show up on the search all POI's. However, if I narrow the search to lodging they don't appear.
Is there a way to search for these without showing all the POI's?
Larry