H5P Libraries compatibility

Hello,
With Open Online Education, H5P comes as a very useful and used tool to develop portable and easy-to-plug content. However, we encounter more and more issues with activity libraries compatibility with hosting platforms. For me, this is namely about importing H5P activities into Moodle, content bank. The H5P libraries indeed are there tied to a Moodle version. As a result, external (or old) activities plugged into Moodle content bank either don’t work, or not properly, or no longer work after attemps to modify from within content bank.

Any idea, @Oliver Tacke, or anyone, on how to ensure or restore compatibility? Any tool available or technical trick ?
We used to discard folders from archive, except for json file and content folder, but it no longer works now…

Thanks very much for your thoughts.