Prevent recursive backflow transfer demands from eroding safety stock

This behavior protects Safety Stock at sites which have been previously planned during a Multiple Site Planning run. Safety stock is planned at each site during global planning. When the nth site is planned and generates a demand back to a site that has already been planned, then safety stock can be consumed. Creating the file “protectss.txt” will prevent the erosion of safety stock due to backflow transfer demands. The file contents are irrelevant, file existence is the trigger.

Default (no .txt file): Backflow transfer demands are allowed to erode Safety Stock.