[MU4 Issue] Glissandi are lost when changing time signature

[cbjeukendrup]

To Reproduce Steps to reproduce the behavior:

1. Create a score with glissandi
2. Change the time signature -> the glissandos are lost, even when there seems to be no good reason for that (i.e. when the notes just stay in one measure and don't need to be broken and tied etc.)

Additional context Same in MS3.6.2 Originally reported in https://musescore.org/en/node/341415

[abariska]

Confirm. Investigated more elements with the issue added to description

[BanjoJake]

I often have complete scores in 2/4 that I want to try in 4/4, so it would be great, if possible, to preserve repeat bars, line breaks, etc, when mathematically compatible.
Related: musescore.org/en/node/341415, musescore.org/en/node/331286 Repeats Lost Changing Time Sig.zip

[sammik]

Also stafftypeChange Signs dissappers. Stafftype itself remains changed somehow.

https://github.com/musescore/MuseScore/assets/1646034/c22b00fe-8353-4def-aa0b-7bd07f1155f3

#19035

[sammik]

Alternate tunings are lost when changing Time Signature #19788

[DmitryArefiev]

The same with new bends #19978 (will add to description)