Current situation

It is not possible to change the parent amount on the billing schedule line entity. In case an update is processed on the billing schedule line entity for the parent amount for example via Excel add in or dual write, the parent amount is not allocated to the revenue split child lines.

With 10.0.42 it is possible to change the parent amount directly in the billing schedule form and the amount is correctly allocated to all child lines.

Suggested solution

Similar to the behavior in the billing schedule form, it should be possible to change the parent amount via the billing schedule line entity and the parent amount is allocated to all child lines, so that the same process can also be used via interfaces such as in the standard via dual write.