I have been testing out how this IN TRAY works over the last month and below is one suggestion to make this feature more user friendly and quicker.
Currently if you load say 20 invoices at once and try and link them to previous purchases you have to click to each invoice to enlarge the invoice to view the details of the invoice. Then you have to click out of this screen and click on the link button to find the purchase. By the time I have done all this I have forgotten the invoice details. Of course I could write down the details or print the invoice (But that would defeat the purpose of this feature).
My suggestion: Can we have the Link to Existing Invoice Option displayed when we enlarge to view the invoice.
Example below
INTRAY - Option to Link Existing Bill when viewing invoice