That's interesting. When I traded in my 425 for the 2210 my dealer told me the hitch was different. I ended up leaving the hitch on the 425 and the 2210 came with a new hitch. I kept the blower, but that needed a different bracket and longer hoses.They are the same ,as you said needed an extra bracket and hoses may need to be longer,,,I cannot remember if we changed hoses when I traded in 425 and bought 2210 and now 2305..Quick hitch working on all three with no trouble.
Daughter father in law has x585 and he is using same hitch that was on his 445.