Downgrading from one version to another is currently not possible. This is because of the feature differences between plans.If you require a downgraded version, you’ll need to cancel your current subscription. Then, sign up for a new one. However, you can import and export data and transfer it to your other account.
You can import the following: Bank Data, Customers, Suppliers, Products and Services, Charts of accounts. For reports, you need to manually export each and import to your other account.
Here at Intuit QuickBooks, we are committed to building products and services that really meet your needs. I encourage submitting a feedback about downgrading QuickBooks version. Simply go to the Gear icon and select Feedback. Our product developers will check on it, and may consider adding it in our future updates.
You can drop a comment below if I can do anything else for you.