You can copy the saves folder (mine is in the kb directory but yours might be in my documents) and it will work if you reinstall the same version you have now.
I do not know if it would work with the russian patched version but my guess is yes. Decide now before you play on because it's a long game.
Mirabella fix is here:
http://forum.1cpublishing.eu/showthread.php?t=4386