I have a midi track with drums and bass on the same track. It's messy to edit and there is no individual control for plugins/bussing etc.
To get separate track control, I copied it to another instance of TTS1 and simply pulled the fader down on one and the drums down on the other and that will work. 
But, seeing as they are on separate channels, is there an elegant way to simply erase all the drums from one track, and the bass from the other? 
Or do I need to work around the mess (in PRV)

Are they on separate Midi Channels?

If so, in PRV, select Edit > Select > By Filter

Then select "None".

Now under All Non-Special Events, select the Midi channel you want to delete in BOTH Min & Max Channel

Click Ok followed by delete.

Do the same on your other Midi track but select the other Midi channel for selection & deletion

Is there some other step I'm missing?
Such as highlighting the track or not?
I highlighted the track by selecting it's number,
Edit Select by filter
chose none
Non special events said 1 in min and 16 in max.
I set them both to 10 but did not touch any others
hit ok.
I see the track clips are now not highlighted (selected) in Track view
Hit delete but nothing happened.
It tried highlighting the track but of course delete killed the clips, not just the drums.

Start by selecting one of your Midi tracks and make sure all note events within that track are selected - (do a "Click & Drag" across all the notes on the virtual keyboard within the prv)

I did this, but after I select the channels to kill, and hit ok, all the data automatically becomes unselected.
Selecting it all after and hitting delete, kills them all of course.
We are talking X1d right? Maybe X2 is different?
Did you try the process? perhaps you dont have drums and bass on one clip?
Can I send you something?
Thanks for the help either way
Glenn

If both instruments are in the same MIDI clip use Split Channel to Tracks.Cal.

This will separate the channels out onto two MIDI tracks. Select the the track and run the Cal from the Process menu.

I found a "Split instrument track" (right click on track header) which made a new instrument track, but with nothing in it?
These are all Groove clip loops. does that make a diff?

No Glenn. I'm talking about a CAL script. You access them under the process menu at the bottom, Run Cal. Or use Ctrl+F1. 

Thanks I found that.
-Selected the combined track
-Process/run CAL/split tracks
-window pops with " final destination =1"
-I set that to the track after the last one I had
-the process runs, adding: 
1. a lot of extra tracks (15?)
2.one of those has a track with no bass. Nice.
3. the original combined track is mostly deleted (all but the first clip)
4. there is no track with the bass. 
I'm still missing something I take it?

M_Glenn_M


Thanks I found that.
-Selected the combined track
-Process/run CAL/split tracks
-window pops with " final destination =1"
-I set that to the track after the last one I had
-the process runs, adding: 
1. a lot of extra tracks (15?)
2.one of those has a track with no bass. Nice.
3. the original combined track is mostly deleted (all but the first clip)
4. there is no track with the bass. 
I'm still missing something I take it?

Be sure you look carefully at the tracks. The bass may not show if its to low on the MIDI grid. Right click on those tracks at the level control(scale) between the track and the track header and click Fit Content.