Using reset clearing in collective child

Hi there,

We're currently enhancing collective customer's payment allocation functionality.

As a part of requirement, we would like to achieve below goals. However standard functionality/configuration is not allowing us to do so.

1. Upon reset clearing (of child invoice with child payment) at child account I would like to keep the RT credit line item at child level.

    However instead of that, the RT credit is flowing up to parent and it is replacing parent payment document.

2. In clearing process (FP06 or FPMA) at parent level, I would like to create my own clearing proposal to clear subsequent invoices at child level (tried with event 120, but it is not allowing to override child level clearing proposal).

Please suggest.

Thanks in advance!

Regards

Bodhisattwa