Use the following procedure if you need to modify a Markdown Schedule.
Click Misc, and select Maintain Progressive Markdown Schedules.
Click 1-Maintain Markdown Schedule.
In the Maintain Schedules dialog, click a schedule to highlight it, then click Change to view and change tier information for that schedule.
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You cannot modify a schedule's header information. If the header information (# Tiers, Method, or Which Retail) needs to be changed, you must delete the schedule and recreate it.
Make the desired changes, and click OK.