Newzik properly generated MusicXML file missing first 4 measures.

Issue type

Import/export issue

Description with steps to reproduce

I purchased a PDF of a partiture, however need to change some instrumentation due to the different availability of musicians in my orchestra. I then imported that partiture in Newzik and it generated a musicxml .

I verified the MusicXML by importing it into

• https://www.virtualsheetmusic.com/playground/beta/ that properly recognized each instrument and each mesure.
• Dorico 5
  However when I imported that musicxml file in MuseScore4 then it fails to

1. interprete the first four measures.
2. use the right instruments for playing
   although in the musicxml file the instruments id are the same as in the instruments.xml of MuseScore, all the instruments are played as pianoforte.

Supporting files, videos and screenshots

score5-8.zip

What is the latest version of MuseScore Studio where this issue is present?

MuseScore Studio version (64-bit): 4.4.3-242971445, revision: github-musescore-musescore-eb6b367

Regression

I was unable to check

Operating system

OS: macOS 11.7, Arch.: x86_64, MuseScore Studio version (64-bit): 4.4.3-242971445, revision: github-musescore-musescore-eb6b367

Additional context

No response

Checklist

• This report follows the guidelines for reporting bugs and issues
• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible