System markings (Tempo, Rehearsal mark etc.) don't appear in parts, if they changed position in score before part creation

[DmitryArefiev]

Issue type

UX/Interaction bug (incorrect behaviour)

Description with steps to reproduce

1. Open String quartet template
2. Add Tempo
3. Drag this Tempo
4. Open parts

Supporting files, videos and screenshots

bandicam.2025-03-05.18-21-10-589.mp4

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

4.5/4.6 nightly

Regression

Yes, this works in the latest released version and is broken in the nightly builds

Operating system

Windows 10

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

[oktophonie]

The tempo is there in the parts, but gobbled up by the multirest (if you turn them off it will reappear).

A variant:

• Create a score
• Add a tempo
• Open part (tempo will be there)
• Drag tempo in score
• Return to part (tempo will be gone)
• Turn multirests off; tempo appears in duplicate: