Mapsource is discontinued, Topo maps are made to be seen in Basecamp, MS cant handle fine new Topo maps.
Mapsource cant handle fine even new City Navigators.
Actually there is no PC install version for Topo Spain, but probably we will have DVD version soon. But DVD version will be to be installed on PC in Basecamp.
GmapTool cant convert MDR file from img to a readable format for Mapsource ,so in splitted map address search wont work. Not sure search by POIs wont work. You can test.