Change Request Automatically Defaults to Lower Price

This is the strangest thing and I cannot figure out the cause or an easy fix:

Whenever an accommodation change request is made, either by me or my guests, the nightly price drops to $20. Nowhere in my settings is $20 the price for a night (not even the lowest, most discounted price). I have to go in and manually change it (which isn’t a HUGE deal). If I’m not being careful and just “accept” a change in date without looking at the change in price I could really be cheated out of a significant chunk of change.

Am I missing a setting somewhere or is this just something that I have to live with.