Combine Transactions

It would be great to have a way to combine transactions (different from the merge function - ie add the cost together and put the receipts for each project together in one transaction) I have a rental property that is formally my primary residence with lots of rehab done by myself (live-in flip), so lots of trips to Home Depot, etc. The scan receipt is great, but if all the materials aren’t purchased at once, it creates a headache for my CPA. He would prefer one individual line item for each project with multiple receipts instead of multiple transactions for each part of the reno.