As Incurred Billing - Cycle From and To Dates

We are testing the use of Cycle From and To Dates in the Billing Options section of Process As Incurred Billing so that the Bill Header and Invoice format are populated with this date range.

We are finding that BIL lines beyond the To/Through Date are selected and billed.

The Contract Bill Plan includes a Cycle ID of QUARTER in Billing Default Override (note: Bill-by ID does not include Cycle ID); could Cycle ID override be causing the selection of all BIL rows regardless of from/to dates?

Currently we are not running this process with Cycle dates; we leave Cycle Dates blank and only populate From and Through Dates.