"Version" app not preserving the documents correctly?

I was looking for an older version of a text file that I just modified a few days ago. I went to the “Deleted files”, found my file, clicked on it, sure enough, NextCloud showed me it has a version that I saved two months ago.

I clicked on it and Saved it to my Desktop. But when I opened it, it was the version that I saved a few days ago…

This is on NC 16.0.1

Thanks…