Hello there, @ccf2. I'd like to ask what account you are trying to deactivate. I'll share information about what happens if you deactivate your QuickBooks Online (QBO) and an account in your Chart of Accounts (COA).

After deactivating an account in your COA, their historical data and transactions will still be visible in your reports for accurate book tracking.

If you're referring to deactivating your QuickBooks Online (QBO) account, your data will remain in a read-only state within one year unless you choose to reactivate it. After a year, the data will be deleted and no longer be accessible.

You can visit this article for more information about it: Cancel your QuickBooks Online subscription or trial.

I'll also add this article to guide you in personalizing your reports according to your business needs: Customise reports in QuickBooks Online.

The Community is always available if you have additional questions about deactivating accounts. We'll assist you as soon as possible. Have a good one, and keep safe always.