tl;dr I lost a bunch of stuff in Paint Mode, was wondering if it is a bug or intentional

So I was working on a scenario in Paint Mode and now the "Controler" and "Country" modes have merged together, which is bad since it overwrote most of the work I had done.

I was using the two modes seperately; I used Controler as what the map would start with and Country to create a 'second layer' once the original countries collapsed or were destroyed, if that makes sense. Now the two layers are merged, with Country overwriting Controler. This is not good, as since I was only using Country as a backup, most of the nations I made only existed in Controler and most of the work I did over the last several days has been erased.

I am aware that the dev had considered merging the two modes together, and maybe this is some sort of early update that hasn't been announced yet, but what's strange is that a different Paint Mode scenario I had has not been affected by this, which doesn't make any sense.

Basically, I'm wondering if this is a bug or not, if anyone else has experienced this, and if I can get my original scenario back.

Sorry for the long post, I wanted to be as informative as possible.