I'll be happy to explain how you can pay your employees when they have been shortened overtime.
Just as @Anonymous said, you can create an unscheduled payroll by following the steps here.
This will add to the total hours when you look at reports but won't affect the check that was already created. If you need it all on one check, you'll need to contact support to have a correction made. To do this, click here.
Let me know below if you're able to get that created properly, I'm always here to help.