Credit Orders - do we have any option in JDE 9.2 to have credit order to have Qty's negative only

We use a Line Type in CO - where the Reverse flag is checked on, but when testing if you enter the QTY as negative Qty it changes the Qty to +ve Qty. So even if you realised you made a mistake, the line doesnt allow you to make the Qty -ve. IF you change the Qty as +ve to a different # then it changes the +ve Qty to -ve Qty.

Q - is there a processing option to set all Qty's entered on Credit orders to be -ve.

thanks,