how can I have an OrderRelease split but not splitting the ship_unit_line

Hi,

We are under OTM On-Prem 6.4.3.

I would like to be able to split an OrderRelease but not splitting the ship_unit_line, keeping the unit count intact. The order release is bigger than the equipement setup. The order Release has many lines, each line equal to an item. The ship unit equal the OrderRelease and all the ship_unit_line equal the OrderReleaseLine by product.

At the end, we want to be able to split the OrderRelease but not splitting the Ship_unit_line.

the flags are like this:

Order_release : Is_splitable = Y

Order_release_line : Is_split_allowed =Y