Dropdown Lists

I noticed after the upgrade that the dropdown lists for the items and customers had disappeared / changed. It is really inconvenient to have those gone. My invoices take approx. 3 times the amount of time to make now that I have to go back and forth between my items list and the invoice to get the right codes. I would like to appeal to the admins / programmers to restore this functionality either in addition to the new system, or as a replacement to the new system.

Thanks!