Thanks, Andrew,

for your hint. But that's not the problem. I always did this with my over 500 songs during the past 10 years. The thru patch information is stored along with the song. But after installing build 298 it's not longer available for me!
By the way: since one of the former builds the "Save + ..." option is no longer needed as by default all these information gets stored with the song. (But before this I always used this dialog in "Save + ...")

Greeting
Ulrich