
It is possible to flip an organ between mixer presets to compare sounds, but you have to create mixer bus groups that have the same bus group number for both presets. Then the organ's rank routing stays the same, and the only changes are in the mixer.
The best way I can come up with so far is to make audio groups defined by their sources -- which types of ranks route to the group -- rather than the destination outputs. So the groups might be distinguished by factors such as:
main/front/diffuse vs surround/rear/distant ranks
ranks that need IR added vs those that don't
low pitched, heavy ranks vs lighter and upperwork ranks
ranks routed by division if desired
Once you come up with a generic scheme for groups that allows you to route ranks by your own criteria, then you set the same bus groups on each preset and point the groups to different outputs in each preset.
This would be more complicated for your experimentation than for me, but bus groups are easy to set up and reroute, as long as you plan a consistent scheme for your needs. Better than changing the rank routing, in my opinion.
Using my examples above, the number of groups might be as high as:
main/surround x IR/none x low-heavy/middle/high x pedal/choir/great/swell/solo/antiphonal
= 2 x 2 x 3 x 6
= 72 groups
But unused groups do no harm, and can point to overlapping outputs or none.
The best way I can come up with so far is to make audio groups defined by their sources -- which types of ranks route to the group -- rather than the destination outputs. So the groups might be distinguished by factors such as:
main/front/diffuse vs surround/rear/distant ranks
ranks that need IR added vs those that don't
low pitched, heavy ranks vs lighter and upperwork ranks
ranks routed by division if desired
Once you come up with a generic scheme for groups that allows you to route ranks by your own criteria, then you set the same bus groups on each preset and point the groups to different outputs in each preset.
This would be more complicated for your experimentation than for me, but bus groups are easy to set up and reroute, as long as you plan a consistent scheme for your needs. Better than changing the rank routing, in my opinion.
Using my examples above, the number of groups might be as high as:
main/surround x IR/none x low-heavy/middle/high x pedal/choir/great/swell/solo/antiphonal
= 2 x 2 x 3 x 6
= 72 groups
But unused groups do no harm, and can point to overlapping outputs or none.