ASCP considers fixed lead time for 'Buy' parts

Hi All,

We are using ASCP version 11.5 where the unconstrained plan using the fixed lead time of a transfer item. currently the item is being supplied from a different org and in the receiving org, the item is a 'Buy' item with fixed lead time as 20. Though it does not have any pre-processing, processing or post-processing lead time, when plan runs, it generates the planned orders with compression days considering the fixed lead time of the items. Ideally it should consider only processing lead time for buy items. In shipping org, it does not have any fixed or variable lead