Force Migration failure Americart=Success, Sparkpay=failure

Americart = 100% operational website. 

Sparkpay's Forced migration = Lost all ability to sell online to owners of Mac computers. 

Amazing what you learn in hindsight. 

I love getting a call or two a day from a Mac user saying the can not shop our website. at least I still get the phone order.. But can not determine who I lost as a customer because of this.