Upload transactions with more than one allocation

It would be really helpful if there was the ability to bulk upload transactions that have more than one allocation associated with the payment.

We have payments that are made, for example, for our Raffle where tickets are purchased and a donation is given on top. It would be great to be able to load these as one payment with an allocation for the raffle tickets and one for the donation.

Otherwise we have to create two separate transactions which is not correct as only one payment was ever made.

The Raffle is only one example of when we would want this ability we have many others.