If you click the button at the top of the pricing engines page (Admin > Preferences > Pricing Engine) to include deleted pricing engines, the deleted engine will be there with a strike-through through the name of the engine. Click the pencil icon next to the pricing engine and save. This will reactivate the engine.
Article ID: 578, Created: October 8, 2014 at 9:05 AM, Modified: October 8, 2014 at 9:05 AM