Quickbooks is separating my checks by date even though they are for the same supplier. How do I fix this so I don't waste multiple checks for the same customer?

Thanks for reaching out to the Community, JessicaBray.

When you pay multiple bills with different dates by check, QuickBooks will create a bill payment transaction. Only one payment record will be created, even though you selected multiple bills with differing dates. This record will be dated with the date you made your payment on.

If you're trying to print the bill records instead of your bill payment check, they'll show as paid, but will show the original dates you've entered on them. To show the date you made your payment, you'll want to print the check, also known as the bill payment record.

Here's how:
 

1. From your Bills screen, access the Paid tab.
2. Find a bill you're working with and click its Show payments option.
3. Choose your payment record by clicking the View details link.
4. Select Print check.

I've also included a detailed resource about working with bill payments which may come in handy moving forward: Enter & manage bills/bill payments

Please don't hesitate to send a reply if there's any additional questions. Have a wonderful Thursday!