@Carpenter50  

You may self migrate your file on the trial license of QBD 2015 and 2019 prior to open it on QBD 2021. Send your business email address in a private message to us should you need the trial codes of them. Otherwise you may purchase a 3rd party conversion service. Then you may purchase a one time license of QBD 2021 Pro for 1 user worth $399 or Premier for 1 user worth $499 thru a partner.