Whether or not any sound sustains depends on the “Setting” for that Section.

Here is what you have likely discovered, if you start with LIVE SET program, say Page 1, Number 1, “CFX” the “Setting” here for Sustain Pedal defaults to “Receive Switch” = On for the Piano, E.Piano, and Sub Sections. If you start with this program, and simply substitute a sound in the Sub section, it will inherit the Sustain pedal Receive Switch = On.

But let’s say instead you start with LIVE SET Page 1, Number 4 “U1” the Rock Upright, here the Sustain Function is On for the Piano and E.Piano Sections, but defaults to Off for the Sub Section.

If you start “programming” from a particular Live Set - when you activate a program in a Section it will inherit the Controller “Settings” for that Section.

Each Live Set program can be customized.

Press [Settings]
Turn the Knob to select “Controllers”
Press the Knob to see the options
Select “Receive Sw”
Press the Knob to see the options
Select “Sustain”
You will see you can set each Section separately.

If you want the Sub Section to respond to Sustain pedal, move the highlight to “Sub”, press the Knob to select , turn the Knob to switch it On.

If you use the Sub Section as a pad sound, you might opt to Store a Live Set with Receive Sw = On
If you use the Sub Section as a walking bass, you might opt to Store a Live Set with Receive Sw = Off

Any change you make under the [SETTINGS] button are stored per Live Set location. There are 20 Pages of Live Sets, 8 locations per Page.

Thank you ever so much.
Cheers,
Darrin