ASCP End Item Substitution - No Planned Order Being Generated

Hello,

I have setup a successor item substitution in ASCP using End Item Substitution. My goal is the following. There is the original_item and sub_item. Original_item will become sub_item in Fall of 2018. Starting in June 2018 there will be a transition period where original_item supply and demand will ramp down while sub_item supply/demand will increase. What we would like to do is have both items planning. Original_item will decrease and as will it components. As original_item and its components on hand inventory is depleted, we want the original_item demand to be substituted under sub_item. We would like planned orders to