I had the same issue and it is SUPER frustrating as with most quickbooks functionality.  I found a bit of a work around that I figured I would share in case it might help others.  I have a zapier account so we setup a simple automation when it found an email that was labeled as a receipt. It would then send a new email with all the same info (essentially a forward but technically not).  Lastly, I just setup some filters in gmail to tag our high volume receipts and one offs I will just do manually.  Not the perfect solution but is good enough for now until quickbooks addresses this in a few years.