How does the Schedule Ship Date being defaulted?

Hi All,

When I save a Sales Order line, the the Schedule Ship Date is automatically defaulted to 1 day prior to the Request Date.

I have no Auto-Schedule defined in any level (not at the Transaction Type level, not on the "OM: Auto Schedule" profile and the "Tools -> Auto Schedule" is unchecked).

The Defaulting Rules for Schedule Ship Date is set to "Always" but without any parameters.

I would like for the users to manually enter the Schedule Ship Date prior to booking, and I also want to avoid any default Schedule Ship Dates once the SO line is saved.