MS 1.2.4 on iOS 12.4.1 iPad 6th Generation and iPad 5th Generation
Pictures here: https://www.dropbox.com/s/rzff7ktqdb73k5d/SubMixAssingtoLR.png?dl=0
Function required: Assign outputs of stereo subgroup to LR (Pic A)
Process: Button created (Pic B)
Doesn't work (Pic C, Pic D)
Note: Works to FX sends and Mix busses.