Sorry, I should have read your post more carefully. As you're converting from unimesh to Girl, the grouping between them will differ, so compose won't help with this one. I'm sorry to say that this does look like the P6 bug I found. I've only come accross one other instance of it besides yours and mine, so I would recommend contacting e-frontier about. They couldn't find the problem from my example alone but with other instances, they might be able to identify it. The man I was in contact about it was Colin Gerbode, so I would address it to him and refer to my instance as they have the files from that occasion (you'll need to quote my real name for that, Jerry Neill Furr). Without P5 or ProPack I think you're going to have to repeat the conversion as you need it.