I have the 2dcs 8/14, ex husband has them 6/14. We have a court order. I am the primary carer. He has been paying maintenance through the cms (as he wouldn’t pay otherwise) since October 2015. There has been no changes to the order or number nights the dcs stay with me or him. He has put a counter claim in for CB was was granted it. So he gets cb for the eldest. He has now presented this information to the cms to say he’s the primary carer and that he shouldn’t pay maintenance for the eldest!