[MU4 Issue] Implode from multiple voices to chords loses courtesy accidentals

[MarcSabatella]

Describe the bug If you have multiple voices on a staff and use Tools / Implode, courtesy accidents in voices other than 1 get lsot

To Reproduce Steps to reproduce the behavior:

1. Score with one staff, C major
2. Measure one, note input
3. Enter voice 1 C6, voice 2 A with explicit natural
4. Select the measure
5. Tools / Implode
6. See error: the natural on the A is lost

Expected behavior All accidentals - including courtesy (user) accidentals, should be retains

Screenshots

Platform information

• OS: Linux

Additional context Not a regression; same bug in 3.6.2. Also, other note properties like velocity and tuning are not preserved.

[Tantacrul]

@oktophonie - think this might be something for your krew?