I've never heard of it, sorry.

I know it annoys you, but you can register her at school etc under any surname you want. If he doesn't see her - even better. Do you have CSA chasing up the child support?

You never know when the child support will come in handy, he will have to pay it regardless - you dont mess with the tax man. I started getting a decent amount of CS a few years ago out of nowhere.....it gave me the "income" to get me over the line for a home loan!!!