Show Geocache icon only on maps

I used to use Mapsource but now persevere with base camp to connect with my 64s

If I import a PQ of say 1000 GC the map shows the icon and the full title of the GC.
This obliterates the map

I know one can edit each GC to show icon only or symbol & code but only GC by GC.

is there a way to do a bulk edit or better still predefine " icon only " when importing?

Mike D