Unless you are using QBO Simple Start or your QBO account > 60 days old, you are allowed to purge your QBO account and re-import your data from QBD anytime. Make sure you are migrating data from your QBD 2019 before May 31, 2022. Otherwise you may need to use the trial version for QBD 2022 to upgrade your file and migrate to QBO.
https:// quickbooks.grsm.io/US
https:// quickbooks.grsm.io/us-promo