We are struggling with this and although I have had 2 online meetings with Amazon we are still having problems. We are registered to sell on the US website and we created a product with variants on the UK site which initially appeared fine on the US site. We made some small changes to the UK listing and the parent has disappeared from the US site and 75% of the child listings are gone. I go to the UK listing and see that on the child listings they are not selling on the US site, I change them to sell in the US (on the offer tab) but immediatly they revert back to not selling in the US. Does anyone have any idea as currently we have a few child listings listing individually on the US site and the parent and child listings listing fine on the UK site. Any help would be much appreciated. Best wishes : Dom