@JMS - from my research, Transfer order works similar to a SO except it's within the business/ intercompany (within the same ERP system). So if the origin location that transfers has fulfilled the TO (whatever quantity they put on it) it should be received in the same quantities at the receiving location. You can't short receive it.
If you have damages or something went missing in transit etc - then you should receive all of it, and then "put the missing/ damaged qty" into scrap/ disposition.
If the origin shipped it in multiple shipments, and you received only 1 of the many shipments, in reality - the origin location should have created 1 fulfillment per shipment - so you can receive only that qty. And remaining shows in transit, not received.