Retropay by Element Rate Override

We are using a custom rate calculation to pay employees based on their work on a holiday. If they work on holiday they get a premium rate, and it not worked, they get a base rate.

Once paid, if there is a correction to the time entry to not worked, the Retropay by element, rollback the hours but still considers the premium rate to rollback.

Is there a way to override the rate calculation on Retro?

Any pointers are greatly appreciated.

Thanks!