Hi,

Quantity discount just only working when In tab Lines using only one category.

For Eg to easy understand:

By 1 get 10% , buy over 2 off 30% for all items like Item A , item B, C....

Discount 30% just applied for items A quantity over 2 . Not applied for bill include item A and B

That is easy basic for discount retail business , not mention items just discount for specified variant.

This is issue that i want improve.