Thanks for the feedback, @MarcCregan. I was able to get some information on this from a Peachtree Consultant: ""Sage 50 does not support this feature by Customer, but it does allow you to control it by specific invoice. Then the next invoice defaults to the same AR control account. It works well once you get the hang of it but it takes a little training. (I had a client yesterday that I did this with the AP control account).
This will provide 2 AR control accounts (ACH can have an AR detail sub-ledger detail aging, and then you can have a combined AR detail ledger. (this is way better in Sage 50 than in QuickBooks).