It's been years since I used my Roland GR-33 ( then using Pro Audio 9?) Today I pulled up an old project, copy/ pasted the GR's midi track into a new midi track.
All the note channel values were pasted to the new track as Note Channel 11 instead of 1.

IIRC (using Event list ) I used to be able to copy a single value / event type then  paste / replace multiple selected values of those events types.
I also tried insert/ process event filter on the midi track but didn't see a way to change the channel values. (or I missed it)

It's been so long I can't remember how I used to do this. There's probably a new, simple way to do this in Plat.. What am I missing? thanks.

I usually just change the midi channel in the track view, It "doesn't" change the midi channel number showing in the event list. But it does change the midi channel. Not sure if that's what you mean.
I do remember long ago changing it so it actually changed in the event list view also. Don't remember how to do that. but I don't bother anymore. Changing the channel is enough.
Hope that makes sense.

There is the "event inspector", one of the modules in the control bar. First, select the notes or events you want to fix, then enter the channel number you want in the channel field. Done. The event inspector can be used to change some of the other event values too.

Thanks bvideo, that was it!

Just noticed that although the note channels changed to channel 1 all wheel events are still on channel 11.
I didn't see how to do this event inspector-how please?