I agree with everyone above.  Getting rid of the closed option makes zero sense.  I want to be able to pull up my estimates and know which ones are 100% fufilled & paid in full.  There is no way of me knowing that without clicking on each associated invoice.  Please bring back the closed option.  It saying converted doesn't tell me if we are DONE with the project from the Estimate screen.  Let's not make things more complicated than they need to be.