I thought the seed for the random world generation was only used on first creation. After inhabiting the world for a while I changed the name of the save folder to be something more pleasing to the eyes.
After some base building I decided to explore some more, and to my horror the terrain was now a complete mess (outside of the region I was in).
As you can see in this screenshot there is a huge hole in the world!

I guess that's because the random world generated by the new name has a lake at that location.
After renaming the folder back to the original name, then deleting all the files in AppData\Roaming\7DaysToDie\Saves\Random Gen\MySave\Region (except the one containing my base) the world was almost back to normal, except the big hole in the ground in the screenshot, which I gathered was because it was in the same region as my base.
Is there a valid way of fixing issues like this?
After some base building I decided to explore some more, and to my horror the terrain was now a complete mess (outside of the region I was in).
As you can see in this screenshot there is a huge hole in the world!

I guess that's because the random world generated by the new name has a lake at that location.
After renaming the folder back to the original name, then deleting all the files in AppData\Roaming\7DaysToDie\Saves\Random Gen\MySave\Region (except the one containing my base) the world was almost back to normal, except the big hole in the ground in the screenshot, which I gathered was because it was in the same region as my base.
Is there a valid way of fixing issues like this?