Hi @Ashley H 

This doesn't quite accomplish what I am needing. Also, by default, QBO has always had a hyperlink in the estimate to any invoice created from it. See my screenshot for an invoice created from an estimate. There is a hyperlink in the upper left "1 linked transaction".

Up until a week ago, you would see something similar in estimates. If I create three invoices from an estimate, I want to see those invoice numbers and amounts in the estimate. I hope this makes sense.