Walk Behind Lawn Mowers

I recently purchased a series 725 lawnmower (HU725F). When trying to register my purchase online I was unable to locate my lawnmowers model as it listed other types (Hu725E). Is this due to registration site not being updated? First time purchasing Husqvarna and would like to register correct item. I called the 800 number and was told that they would call back but no return phone call.