I am a regular Flying blue flyer, and I am trying to test different airlines and of course get miles. Decided to give Aeroflot a try. Have booked a r/t trip from Europe to Asia. Since I could not book directly with Aeroflot, due to my long name, I booked on another website, once payment went through my confirmation shows my name the way is supposed to be, i.e. "Name" "Lastname" "Lastname2".
However when I checked on Aeroflot's website my booking it shows instead: "Name" "LastnameLastname"
I phoned the airline in my country, and I was told "don't worry, it's because in Aeroflot you cannot have spaces on the last name field. It will be fine"

Anybody else having similar experience, should I be worried that a different employee might interpret the naming situation different?