Allow for a Partial Return on Fertilizer Batch

Client has a lot of customers that split with their landlord, however, at the time of delivery for the batch they do not necessarily know the landlord or percentages. Therefore, they are settling the batch to get it out of open batches, but then end up having to perform a return, recreate the batch, and then split it. User stated it would be more preferable to be able to do a partial return, and then settle that portion to the landlord once they get the information from the customer how the split needs to be performed. There is a good bit of time from when they are done with the batch before they get the split information, so they do not like to leave these orders in Open Fertilzier Batches until they get the split information.