Create debit note with reference to several debit memo request

Hi all,

I am facing a problem for which I can't find a solution.

Problem:

1/ I have to create a debit note with reference to several debit memo request.

2/ on this debit note output, the customer should only see 1 main item

Why:

1/ some debit memo request are going into a cost center (via the use of the order reason)

2/ some debit note request are going into profit center

3/ the two above should be combine in order to charge the customer for the cost + profit. He will receive a debit note output which will only show one main item with the total amount.

If anyone had this case, please help.

Thanks

Jimmy