Marginnote refuses to import files

I want to import documents a second time to be able to edit them a second time. I even renamed them in the Files app before importing them. I have the impression that Marginnote recognizes the attempt of a second import. In any case, the files appear briefly in “Documents” and then disappear immediately. How do I turn off this behavior?

Hello

Hello, the same document cannot be imported twice. You can use multiple notebooks

Kind Regards,
MarginNote-Relight
Support Team