When reviewing the tranaction why is it sending my Sept. checks and deposit to April in the register

Hello, rickylee369.

Thank you for reaching out to the Community. One of the possible reasons why it shows up in April in the register it's that the bank clears your checks in April. 

However, If it's verify for September checks and deposits, we can check the audit log to view if other user modifies the date of your checks and deposit in the register.  

Here's how: 

Here's how:  

1. Click the Gear icon button in the QuickBooks Online toolbar.  
2. Select the Audit log. 
3. Filtering choices from the User, Date changed, or Events drop-downs in the upper-left corner of the page.  
4. Tap Apply. 

For your reference, here is an article about Use the audit log in QuickBooks Online. 

Additionally, to learn more about when QuickBooks deposits customer payments into your bank account, visit this resource: Deposit customer payments.

If there's anything else I can help you with, please let me know. I'm just right here and willing to assist you. Have a nice day.