Yeah, the problem is that some things are included in the OBJ export (raw point deltas) and some things are not (scale changes, apparently).  It's very troublesome when developing a V4 character because there's no easy way to tell whether a given dial is purely a morph (and can thus be exported to OBJ with no trouble) or if it contains some scale change or something that will manifest some problems when joints are bent.

At least it's confirmed that you CAN put scaling into a slider mixed with other things:
**http://www.rbtwhiz.com/rbtwhiz_ERC.html
EMC evolves into ERC.***Beginning a month or so later, having the information fairly fresh in my mind, I couldn't "leave well enough, alone". The newness and shock of it began to wear thin and it occurred to me that what we discovered could quite possibly affect more than just morphs. So, I began testing; any and every channel I could find. I was ecstatic with what I found. Nulls (valueParm), morphs (targetGeom), rotation, translation, scaling, deformers, lights, cameras... they all worked! *
It occurs to me that this is very likely how V4's "MorphForms" work under the hood. 

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