Can't say I'm clear about HOW or even WHY you would send CC data to a standalone controller. I'm just thinking there might be a more elegant workflow to what you're doing, but I'm not sure what you're end goal is. I can't imagine there is a way of sending CC data TO a digital encoder, since it's sole function is to generate data. Think about it, obviously you can't do that with a fader or else you would need a servo. The only thing I'm wondering about, my self, is whether there's a way of sending information to the key switches that are on Toggle mode, that would be sorta nice.
But getting back to you're original question, what are you trying to accomplish with this? Since it's a standalone controller, you're end result is going to be software, so couldn't you just send the data you need to the software, instead of going through? Or are you trying to refresh the controller with the absolute value of data when you open a patch so it won't jump? I doubt it. That's why I'm just biting the bullet and getting used to relative mode (I've never used continuous encoders before). I prefer physical pots, but if I'm going to use encoders, probably their best workflow is relative.