Here's my take.
The 15 Nov paycheck represents half of your November bidmonth, plus the overages from October. (The end-of-November paycheck represents the other half of the November month, as bid.)
The overages from October (per diem, Int'l Override, trips added/dropped/traded/etc.) will be at the old rate, and the "first half of November" pay will be at the new rate.
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