That is very very annoying, when one upgrades to a new version of a software and can no longer open files or bundles created with a previous version!
This is by design to allow supply chains to work as robustly as possible with Passolo. Refer to the SDL Passolo Migration guide for more background information. See https://sdl.ssl.cdn.sdlmedia.com/636566185233113544ME.pdf.
That is very very annoying, when one upgrades to a new version of a software and can no longer open files or bundles created with a previous version!