I just tried that and oddly it made the discount price jump from 20% off to 64% off!?!?

Her setting is product priced by attribute with the retail set at 0 in the product info page...

through the price manager I have the 20% off set....

I have worked with Zen for years, but she has the most unique way of needing to run sales and I am stumped! But she was running it on her old site the way she wants it.....I think it was MivaMerchant? It was god awful...but I guess had a more robust sale feature.....I need to prove Zen is better!