No, there is no feature in QIP 65A that will automatically print 5 copies of a form.
You will need to reprint the invoices.

If you switch to Adagio Invoices, you will have this functionality. Using Invoices, you can set the Specification Options to print multiple copies. You can also insert specification codes/labels that will only print on the copy you specify. This may be useful if you are printing packing slips, accounting copies and customer copies at the same time.

There is no data conversion. If you install Invoices, you can still use QIP 65A while you are becoming accustomed to Invoices.