How do you set start locations in worldbuilder?

[Venboven]

I loaded a map of the British Isles from a mod on the workshop in worldbuilder because it lacked start locations. I went in and placed them, and started a new game using the modified map. However, I spawned in the wrong place. I reloaded the map in the worldbuilder and it was as if I had never even placed down the start locations at all.

So my questions is, how do I ensure the start locations stay after I place them in worldbuilder?

 

[the Jack]

Forgive me for asking such a basic question, but did you set up the civ and start location parameters in the Player Editor before placing start locations?