Musescore version 2 can't read compressed MuseScore 3 files
When I try to read a compressed MuseScore file made with Musescore 3 in Musescore 2.3.2, I get a load error. I was asked to use a newer version of MuseScore.
I managed to get it readable in MuseScore 2 by exporting it first to xml and then importing it in Musescore 2.3.2.
I expected the new mscz to be fully compatible with the old mscz.