Help With Custom Race Homeworlds For a Custom Map

Hi all Galciv fans.

I am trying to place the starting planets for custom civilizations on a custom map (Milky Way), but when I start the game, my custom race starting planet is random.  It is easy to set the homeworld for a stardock defined race (terran, drengin, etc.) but assigning a planet to a custom race via the customMap.xml files isn't working.  

Any help would be greatly appreciated.  Thanks!