Can't add Data fields to Tooltips on Map

I have a map of stores.  I would like to use Tooltips to show store attributes: store name, city, store manager, etc.  However, whenever I drag a data field into the Tooltips box it won't stick -- disappears.  All my Tooltip shows is the GPS (which I could live without) and the field I'm using for the Legend.

All of the store attributes are in the same 'Stores' table as the GPS coordinates (single field) that define the points on the map.

Any suggestions appreciated.  Thanks!