I checked the EJ page in the marketplace, and it isn't clear whether the base body shape and boning is the same. It's V2 UV mapping, and a lot of morphs. The UV mapping needs a different OBJ file. If the standard Judy clothing works, body shape and boning the same, then there is a work-around. I expect you'd want to take advantage of the EJ morphs, so you couldn't just convert clothes to standard Judy. But that's the obvious quick answer: convert the clothes to a scratch Judy. No, I'm not going to give away the secret in public. It might be very easy for Phil to add support, and I think you should ask him nicely.