@moreins1 - Since I use a custom Bulgaria map and needed to have routing in Western Europe, I have put up unlocked Western Europe 2012.30 map inside as well. However the routing was not working. Silly me, since the .ipa came with no maps, it did not include the base map - no base map, no routing between 2 or more pieces of custom maps. So, the base map is called "gmapbmap.img" , primary map is "gmapprom.img", secondary is "gmapprom1.img".
Goog luck !