At first, and as usual. thank you for all answers trying to help.
Second thought is that it is always very difficult to explain your problem with words... and see that you have not been precise enough in describing it, although you thought you did!

So, I try it again: it all starts with the fact that I am not able to record my guitar world class solos in BiaB (I am so ashamed!!). The guitar sound goes through a Line6 interface and Biab levels react to it, but it just does not record any sound...

I have solved the problem in using Audacity, which records perfectly (of course on the same Line6 interface).
Next problem, I, of course, cannot use the original .sgu files that Audacity does not know...
So I have to "translate" my .sgu files into MP3 files that work in the software.
Unfortunately, when I "translate" within BiaB a .sgu file into a mp3 file, BiaB does NOT include the count in in the mp3 file. And I NEED it to start my solos on time!