Base from previous gameplay in new one

[Nalk]

I've just encoutered weird bug.
On my new playthrough/save I've ran into my complete base (+- small differences) from my other playthrough/save. I also hold ownership of said base, there is food and gear stashed around. Only difference I've noticed so far - there are mounted crossbows instead of multiturret harpoons. Also no terrain (trees, bonedog nest) is removed.

I also have third playthrough, but I did not find that base in there. Turning off and on did not work

1) What happened?
2) Can I clear my save of that extra stuff? I do not want to make it too easy on myself.Plus first playthrough is anti-Slaver, second one is HN ally.

Saves here:
https://www.dropbox.com/s/6vuh7xng7279icn/save.rar?dl=0
Leon (last played today - 24 April) = new one with base that is not supposed to be there
Dragon (last played on 7 April) = more advanced playthrough from where the base was "coppied"
Both saves are at the position of the base.

[Hatsune_Neko]

you started a new game while you was still playing
this is a known issue
please start a new game form the main menu

[someone]

This is something that should be fixed by the 1.0.22 update. The extra town is already in your save, but it shouldn't copy anything again.
If you delete zones/zone21.36.zone from your save it will clear this area.