I didn't follow their answers well, but the fact that the file is not "pure" or "corrupt", we can also say... This was not mentioned, and I did some research ...

I have a HD seed, yes, what more can I say,
apart from how do we deal with this "non-pure" file?

Is a simple backup wallet enough?
should I activate the software option "activate or not activate parts control"?
I made a few unsuccessful attempts... but I don't want to miss the train with FALSE manipulations!!

or otherwise, apart from forcing, "rescan and rescan", I don't see?!
help requested!
Sincerely !