iMIS 10.6 new dues billing behavior with account receivable?

Hi everybody,

I have a question for the community.

We had migrate to imis 10.6 few weeks ago. We have a new behavior and I'm not sure it is good. In iMIS 10.2, if a create a new bill in the customer/billing tab with a dues item and after I make a payment, I receive a pop-up with this message :

There is and underpayment of ####

Click Yes to confirm the creation of an AR item

Click No to cancel the process

Then I click yes and IMIS create an AR item. If I double-click on this AR Item, in IMIS 10.2 I have 2 lines. One line for the dues item (type DIST) and one line AR with the subtotal. (type AR and gl account for account receivable). I don't see this last line in iMIS 10.6. Why? I think this second line is for account receivable but I don't know why I don't have it with a DUES product in the billing module.

If I make an order and I process the order, I find the second line for account receivable 

Thanks for help