Slurs and ties not assigned to new voice when switching voices

Issue type

Other type of issue

Bug description

Given this:

If we select the second half of the bar and click the 'Voice 1' button to move it into voice 1, we get this:

The notes are all in voice 1, but the slur (despite being positioned correctly) still belongs to voice 2; if we select it, it's green (the voice 2 colour):

And if we delete the second voice (by selecting one of the rests, Ctrl+Shift+Del to reduce it to a bar rest, then Del again to remove it entirely) it takes the slur with it:

Not a regression as such; in 4.0.2 the slur didn't even reposition itself at all (it would be drawn under the rests in voice 2) though at least in that case it was more obvious that intervention was required.

MuseScore Version

OS: Artix Linux, Arch.: x86_64, MuseScore version (64-bit): 4.1.0-231921359, revision: github-musescore-musescore-2e3a93a

Regression

No.

Operating system

Linux