I finally got it, but it was confusing. When placing "claimed tiles" on top of room, it doesn't clear the rooms.

I just fixed it. Thanks for your report

Hello Галиев Рустем = ) Can you please upload your map ? (http://brightrockgames.userecho.com/topics/1095-how-to-locate-your-save-files/)

Those tools (2) are quadrant pivot, which can't work on non squared map. I now disabled them in such case. Other mirrors are still available.

Hum, loading the save game works well for me. Can you confirm that loading the save works for you too ?