Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
What does the Order actually say?
How old are the children now?
I am afraid that the CSA/CMS can indeed ignore the Order - the law is clear on the issue.
The "no further claim" paragraph does not apply to the CMS as it is in fact not possible to 'buy out" future Child Maintenance as a matter of Public Policy.
I am sorry to give such bad news - please ask if you need further details
No I am afraid they will not do so - unfair I know and frankly you should have been told at the time