Back in October 2023 a depost was not applied to an open invoice, how do I fix this? Ive tried several things that did not work, I want the transaction to stay in 2023

I can help you with applying the deposit to an open invoice to remove the outstanding balance, @Bobbie51. 

You'll just have to go to your Chart of Accounts, edit the deposit by adding the customer where this payment is coming from, and set the account as Accounts Receivable. Once done, set the deposit as an invoice payment. Make sure to enter the day you received the payment in the Payment date field.

To edit a deposit, follow the steps given below:

1. Go to the Gear icon and select Chart of Accounts.
2. Find the account you deposited the payment to, and click on View register.
3. Select the correct deposit from the list and click on Edit. 
4. In the Add funds to this deposit section, find the deposit.
5. From the Received From dropdown, select the customer from where the deposit came from.
6. From the Account dropdown, select Accounts Receivable.
7. Click on Save and close.

To apply the deposit entry as an invoice payment, follow the steps given below:

1. Click on the + New button and select Receive payment.
2. From the Customer dropdown, select the customer’s name. This will display all unpaid and outstanding credits for the customer.
3. Enter the day you received the payment in the Payment date field.
4. In the Outstanding Transactions section, select the invoice you need to mark as paid.
5. In the Credits section, select the deposit.
6. Click on Save and close.

Check the following article for more information about finding and editing the deposit and applying it as an invoice payment: Link a bank deposit to an invoice in QuickBooks Online. 

To review past bank deposits in QuickBooks Online, you can run the Deposit Detail report. This report provides a comprehensive overview of all bank deposits recorded in your account. Refer to the following article for detailed guidance in generating this report: Run reports in QuickBooks Online. 

If you encounter any challenges or need further assistance, don't hesitate to post a reply on this thread. I'm always glad to help in any way I can. Have a great rest of the day!