[Ruatha]

Been awhile since i did this so I might be wrong.

When adding them manually you have to assign the planet a value. A ruin and how many techs or specified unique tech number.
You do this by using the drop down menues when creating the planet.

(Bad explanation but I don't have the editor infront of me, if no one comes up with a better explanation I'll put up abetter answer tomorrow).

About the auto generated maps I have no clue why that happen.