[TablEdit import] string/fret assignments ignored in part 2 and up

[lvinken]

Issue type

Engraving bug (incorrect score rendering)

Description with steps to reproduce

1. open attached tef file multi_track_frets.zip
2. observe incorrect notes in parts 2 and 3 at beat 3 (frets should be 5, 8 and 7 for the three notes in all parts

Root cause is an incorrect string assignment by the TablEdit importer for all parts except part 1. This causes the MuseScore layouter to assign strings and frets, thus overruling the values (correctly) read from the tef file.

Supporting files, videos and screenshots

TablEdit and MuseScore view of the file multi_track_frets.tef:

In which versions of MuseScore Studio is this issue present?

master commit 1e352d7, 4.7 commit 8efae57

Regression

No.

Operating system

macOS 26.4

Additional context

Will provide a pull request.

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

[coderabbitai]

🔗 Related PRs

#32811 - Fix chord symbols alignment when multiple staves have chord symbols [merged]
#32855 - [MEI] add support for fingered tremolo [merged]
#32868 - 4.7 ports [merged]
#32894 - 4.7 ports [merged]

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