If you mean, can you restore a database backup you made while on build 923 onto current build 936, the answer is yes. This is just the data, it does not revert your RoonServer back to 923, if that is what you meant.
No what I am asking is I want to do a complete rebuild of my Roon server. I want to use a saved version. In this example the version is 1.8 build 923. After I finish with the restore my Roon server will be running 1.8 build 923 correct?
I have 10 Roon versions saved, I guess they are database backups. These are the backups I do every 3 days automatically in Roon. If I do a complete rebuild of my Roon Nucleus+ using 1.8 build 923 what happens? I “assume” after it is complete I will be running 1.8 build 923. I know when I went from my Mac Mini to Nucleus+ I just picked one of my saved backups and aways it went.