Collective Invoicing : Payment block

Hi Friends,

I have a question regarding a situaton when 1Child BP ( from a Collective Group) has a dsipute and one child individual invoice is held up.

Since the payment is accepted at the Collective BP(parent), How we can ensure that payment is not allcoated to this 1 child CA till the dispute is cleared.

Any payment block at the child level is not taken into consideration when payment is allocated internally against each child accounts.

It would be very helpful,if any of you can suggest ways to deal with this based on your experience?

Thanks in advance.

Rajesh