No…
With the midi file you provided, and a polyphonic staff, Explode reassigns the notes’ channels according to the lines.
One workflow, assuming your have set the midi part in Score Edit to polyphonic display, would be to:
- open the part in a score editor edit view, explode to voices
- switch to a key editor
- Use the Logical editor to select all notes in the channel, eg., the top voice will be in channel 1
do your edits.
This can even be done using a macro to perform the commands.
Here’s a gif of what happens: