No.
... but when I went to hire a DR400 after learning to fly on Tiger Moths the receptionist at the flying school suddenly stopped, looked up, and said (somewhat in jest) 'you're a nose-wheel conversion'!
But, no, there isn't such a formal thing as 'differences training' for nose-wheel aircraft - EASA can't imagine that anybody could learn to fly on a tail-dragger...
That's not to say that a check out wouldn't be a good idea.
Last edited by Kemble Pitts; 27th May 2019 at 16:45.
Reason: check out added