Does anyone have experience applying General Finishes oil base urethane Arm-R-Seal directly over waxed shellac without using a de-waxed sanding sealer? I know that it is not recommended to apply waterborne finishes over waxed shellac. I'm trying to avoid adding a dewaxed shellac over the existing waxed finish.

I'm finding it impossible to contact General Finishes directly for technical information...their phone number has been wiped from the web.

Thank you.