Error with new Document Library Database R8.5.3

I use a new document library database -XPages- (from IBM original template “StdXLWebXDocLib”) on a server R8.5.3 FP2(with extlib).If I create one (or more) document directly in the database in HTTP, no problem.

If I copy (Copy/Paste) documents from an earlier version of Notes, I get an error:

“java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0”.

Ditto if I change the template from the old database to the new one.

I think the problem is an incompatibility between the fields “Category” (Notes) and “Tag” (XPages).

Because a solution is to rename all the tags under Notes.

(Having a hundred documents, I’d not change all the tags manually)

Do you have any idea of ​​the problem or a solution?

Thank you in advance.