Allow me to assist you with migrating data from the old QuickBooks system.
Are you trying to import your data with Intuit Data Services? When you download file, are you referring to uploading a backup of your data for conversion? Any additional information or screenshots will ensure a timely solution.
Please know that the transfer process for the conversion will happen within three to five working days. To know more about how the process works, I'm attaching the article on this:
Since the QuickBooks Data Services team operates independently, you can reach out to them via email. To know how you can contact them and to check the status of the conversion, check out this article: