I'm glad to know that the resolution provided by my colleague was able to help you resolve the issue you had with splitting a transaction, @blueview1901.

For future reference, you can read this article to help you reconcile your accounts in QuickBooks Online: Reconcile an account in QuickBooks Online.

Don't hesitate to click the Reply button below if you have other concerns with managing bank transactions in QuickBooks Online. The Community is always here to help. Have a great day.