What is the problem?
Polyend synth can receive program change messages to switch presets, but it can only switch presets in the same engine that is currently active.
What should this feature achieve?
By allowing users to switch any of the presets using program change regardless of whether the engine is currently active or not.
Are there any workarounds?
No.
Any links to related discussions?
No.
Any references to other products?
For example, sh-4d has multiple synth engines,
but the user can switch between all tones by combining MSB, LSB, and Prg Ch.