Zen cart version v1.5.3
easy pop 4

I really need to find a way to apply quantity discounts (same quanity and percentage)
to MANY Items - as many as 450 within a single category
Is there some secret to using Model/Price/Breaks
to import to either ADD Quantity discount & percentag
or modify those that exist
I really do not want to need to do this one at a time

TIA