I create an Estimate (no 01) for a Customer that I use several Ship To addresses.  In this case I Ship to 123 West Main Rd.  Zoho now remembers this as the Ship to Invoice.  Now I create another Estimate (no 02)  and the Ship to is now 456 East Main Rd.  When I go back to Estimate No 01 and "Convert to Invoice" it uses the LAST Ship To address (456 East Main Rd) not the (123 West Main Rd).  It would make sense that the Ship To used in the Estimate would always carry over when converting the Estimate to an Invoice.  

Also the SHIP TO address needs to be more visible when creating an Invoice or Estimate.  Even when you Preview the Invoice or Estimate, (before sending) the Ship To address it is not even shown.  Please fix this!!  I have to go to "Print" to make sure I have the correct Ship TO address.