If I create a custom map inside of the game, open it in Galaxy Forge, move any of the stars in the map, save the map, and then open it in the game, the section for changing the Star Type completely disappears.

If I launch the game with this map, the game immediately results in a defeat of all players.

I feel like I am missing something, but I can't diagnose the problem causing this to happen.

Does anyone have any idea on where I should start looking for clues?

To clarify, when I compare the map created in the game to the map in the Galaxy Forge, it looks like the only attributes changed between the two maps are the "pos" attribute for the stellar objects.