MMANGOMAN

I have just come from my local Ford dealer where I tried to have the automatic trans fluid flushed in my 4 cylinder Fusion. This car has the FNR5 trans that calls for a special fluid. After trying to find a compatible fluid with no luck I took the care to my local Ford dealer to have them flush the trans. I was told by the service writer on duty that the trans was not flushable. I asked him why the owners manual recommends a fluid change when it cant be done. He said it was a mistake in the manual. Has anyone been able to change the fluid? Or was the service writer correct?