Hi there, @Mike771.
You'll want to delete the check and make a deposit instead. Write check is a money-out transaction, thus, using a check for a deposit will show a negative balance in your account. Let me guide you how.
In your QuickBooks Desktop (QBDT) Mac:
- Go to the Lists menu.
- Select Chart of Accounts.
- Locate and select the account.
- Select the check deposit, copy the details and click Command + D in your keyboard and click OK to delete the check
- Once done, go to the Banking menu.
- Select Make Deposits.
- Choose an account you'll want to deposit the money in the Deposit To field.
- Fill in the needed details and click Next once done.
I recommend getting in touch with your accountant for guidance in making these changes. That way, we'll ensure the accuracy of your books after recording this.
Also, I got you this article that can guide you in reconciling your accounts in QBDT Mac: Reconcile bank and credit card accounts (Mac).
In case you encountered discrepancies when reconciling your accounts, here's an article you can read on how to handle the situation: Find reconciliation discrepancies (Mac).
Please don't hesitate to contact us anytime whenever you have other concerns. The Community is always around to help.