Hi userdingwellsbr.
Knowing what affects each account is a great way to keep your books correct and being able to know what reports it will change. I'd be happy to point you in the right direction for this.
In order to know why the payment in your Undeposited Funds is affecting your Aging Accounts Receivable I recommend reaching out to your accountant as they are trained in this. If you don't have an accountant no worries, we can help. You can go to My Accountant>Find a pro to help to find one in your area.
If you have any questions let us know and we'd be happy to help.
