We have a vendor card set with a lead time of 10D and an item we purhcase form this vendor with a lead time of 45D.

Why is it when this items is keyed on a PO the planned and expected receipt dates are using the 10D calculation instead of 45D? 

I would have thought the item card overrides the vendor card lead time? There may be items from a vendor that take longer to supply. 

What is the difference between an expected vs planned receipt date?