How do I recognize prefabs that I can use in the current game version

[Sixx]

Whoo everyone. A question about the prefabs/monuments. How do I
recognize which buildings are to be used for the current game version?

Well, a building that is 2 years old might cause problems, but how far
back in time can I go. Unfortunately, there isn't always something there.

I don't want to put any new items on the map and then it doesn't work
again.. I already had.

Thank you,  Sixx

[DeutscherRitterPlatz]

Hello @Sixx! Yes, we are familiar with this issue ourselves, which is why it's always important to test the monuments beforehand and fix them if they are flawed.
Do you use RustEdit or are you more familiar with it?