Yes, I have a TC Electronics M-One XL and a Yamaha SPX 90.Correct on the ACCESS jacks to patchbay. You can have the jacks connected to each other via normalled or half-normalled pairs of jacks on a patchbay to replicate the jumpers, or normalled/half-normalled to inputs and outputs of your insert effects processors. My advice is, unless you have insert effects processors for every channel, I would pair up the SEND/RCV jacks on normalled jack pairs on the patchbay. And then just patch in your processors as needed.
So you have two stereo send-effect type processors? Like reverb, delay, that sort of thing?