We're still trying to get our heads / hands / whatever around this MRP thing.  I think our lead times should be pretty well set, but I have some other concerns that I need clarified.

I ran the MR-H for Buy parts and I noticed several (well, quite a few) items that came up on the report with a BUY action (obviously) pegged to PO's with Start, Due, and Req Dates from back to anywhere from a few months to almost a year!!!    

These PO's have long since been received, paid, and closed so how are they showing up on this MR-H report?

Similarly, running MR-G for R parts lists "tons" of items that have LONG since been bought.

Obviously my "clean up" is going to go much farther than BOM's, leadtimes, and reorder points.  How do I go about getting rid of all these nonsensical items that are showing up on these reports?