Hello hildibusiness,
Great question! I know there are times when the same account has been created a second time in error or you're just cleaning up your Chart of Accounts to make things more manageable in your books. In this case, merging accounts is a good way to do that. I see you've mentioned QuickBooks Desktop Pro 2019 in your question although you've tagged QuickBooks Online. I'll outline how to do this in QuickBooks Desktop.
It's a fairly simple process that only takes a few steps.
- Select Accountant menu, then choose Chart of Accounts.
- Take note or copy the name of the account that you would like to keep.
- Right-click the name of the account that you would like to merge, then select Edit Account.
- Replace the account name with the one you took note of or copied, then select Save & Close.
- A prompt will appear, select Yes to merge the account. Note: If you receive a prompt saying "You cannot merge an account that has online information associated with it into another account" This means you have bank feeds activated that needs to be deactivated.
I pulled those steps from the following article: Merge Accounts, Customers, and Suppliers Take a peek to learn more about this process.
That should get you on your way! I'm here if you have further questions.