MY MS4 HAS PROBLEMS TO READ MUSESCORE v3 SCORES

Hi!
Weell, I said on the subject.

When open scores old I did made on Musescore 3, using my Musescore 4, It dont read corectly: many notes donst sound, dinamics are ignored, instruments without right performance.
¿What I could do?

I add a print. This parts (f.ex. Flutes) sound really bad on MS4. Even if I writing all notes , one by one, again.

Thanks for yuor help!