Faba, That is exactly it. Visibility seems to be interpreted by Carrara in this way. Is this a bug in Carrara's handling? I'm not sure. Other models tend to only have translation visibile on the hip bone so the figure can be moved.

Dr Geep's suggestion to turn off IK makes no difference. The problem is down to these translation parameters appearing. It looks like I have to edit the cr2 file and make it like other people's figures.