Is it Possible to Route Between Map "Products"

If I have a set of map tiles in a product called “Europe” , FID 1234, and another set of maps tile in a product called “Asia”, FID 2345, and all the external nodes on each mapset align perfectly, will I be able to create a gmapsupp.IMG to route from Europe to Asia?

Will there be any way to test the routing in MapSource?