Cubase 9.5.30 maintenance update available

For new projects yes, but the "bug "has been saved in all the project files that are saved in pre 9.5.30 (started with 9.5)
How is that for you? (or anybody)
Well thats what im facing.

backup project thit not work…

open in 9… saved again and open in 9.5… thit also not work