@con-pilot: The EASA Falcon 50 rating covers the 900 Classic as well, but you require differences training between the variants.
That's what I thought, thank you.
Systems wise, the 50 and 900 are basically identical and you could move from one to the other with no or little problems. Until the EX series came out, as the avionics package are completely different between the 50EX and the 900EX. Then the 900EAsy came out and just the EAsy requires a type now.
I still say it was a mistake to cancel the 50 series aircraft. The 50EX has very impressive performance, not to mention a joy to fly.