Export XAR from XWiki Debian 12.9 to XWiki Debian 12.10.8 fails

Hi everyone

First case

I failed to import the attached xar file called export19(13) (which has been exported from a 12.9 release) to my 12.10.8 release. I could successfully export and import the attached file within the 12.9 release. So, I assume that the file is okay.

Second reproduction of the bug

I have found another way to reproduce the bug. If I export the article "one Article.xar" in the release 12.9 and import it to 12.10.8 everything works fine. If I do the same thing with the articles (4 articles.xar) it also works fine. But If i do this with "too many articles.xar" it fails when importing the file into of 12.10.8.

What is the difference between all these files? Basically, one article.xar contains just one article and the other ones contains just multiple copies of it (see image below).

Therefore, I can say that importing one article works, importing many articles fails, even if all those articles are just a copy of the one which worked.

Regards

André