No, the Maximum Unit Price function under Line Item Filters does not look at Line Items of types other than M when processing redemption requests. If set up using this function under Line Item Filters, the Qualification Criteria will ignore the item that is intended to be discounted and result in a "Redemption not possible since amount is 0." error in the redemption log.
Qualification Criteria intended to discount service charges, such as discounting a delivery fee, should use the Sum of Amounts function under Line Item Filters as this will look for items of types other than M.
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