Hi @frei_zs ,
Unfortunately we don't know what aptly
is doing behind-the-scenes and can't guess what could be going on here. I don't believe that ProGet is generating that file; it looks like something aptly is doing based on data downloaded from ProGet.
ProGet implements a Debian repository as specified here:
https://wiki.debian.org/DebianRepository
It's possible that there's a bug in our implementation, or a bug in aptly, or both. But we can't really track it down with the information here :(
Your best bet would be to start with the aptly team, and to see if they have any idea.
Cheers,
Alana