I Lost all details: ground, trees, textures etc
Also all the queue times are messed up.

Multiplayer Dedicated Alpha 18.2

I have full appdata save game here backup which can be used for reproducing issue
https://www.dropbox.com/s/5k1hona7lu...PDATA.zip?dl=0

Screenshots of the issue
https://i.imgur.com/Mpldu0F.jpg
https://i.imgur.com/aV4UJer.png

I'm not wanting a way to fix this old save(I already copied players to new game), but just to inspect why it did happen as that kind of issues are annoying