Thanks for your answers

and vital advice!
Was dreaming JSGME had some file versioning feature. Does that mean that if I reinstall the previous mods, based on 1.1 files, upon reinstalled and patched game, I will loose the update of the patched files ? ie any mod which files have been overwrited by 1.2 is now unusable untill they are merged with their corresponding 1.2 files ?