A way to select game version?

Would this be possible?
The reason is simple: Previous version all the non-buildingpart items of our bases just up and disappeared one day (no decay setting on the server)
This version a majority of the building blocks that make up a lot of space in our bases are no longer available because this version does not support the mod we were using and the author lost the files.

It would make a lot of sense, please consider adding this as soon as convenient.

If you are on Steam, it is possible to play on older game versions.