Reassign some tracks to different channel strip
The help topic Logic Pro X: Reassign tracks to different channel strips tells me how to assign one track to a different channel strip or to assign all tracks that are currently on a particular channel strip to a different channel strip.
But, what if I have 60 tracks on the channel strip for instrument 1, and I want to move only 30 of them to the channel strip for instrument 2? How do I accomplish that without having to move them one at a time?
I tried selecting all 30 tracks and doing Reassign Track > Mixer > Software Instrument > Inst 2, but it either only moves one track or, if I use the Global feature, moves all 60 of them.
Is there any reasonable way to accomplish this move?
Mac mini, macOS High Sierra (10.13.5), 16 GB RAM