Put it together with a cover letter listing your time served by components. Most of them want to see it before they talk. What happened to the last file??
And make extra copies for yourself and the next guy you gotta show it to...
Seriously though... Include an outline of everything you would tell him face to face followed by the backup paperwork in order. Give him a few days to review it and ask if he needs anything else. These guys are just processing cases. I'm sure he's got a ton of them to do.
Just remember he is the new guy in this. Not being there for an appointment is still BS, and I would let him know that you keep appointments and expect the same from him.
Why did they switch people on you if someone else was on it? If he has records that you had 3 others before him, he may think this is a PITA case that was dumped on him, or could be copping an attitude on YOU for it right off the bat. Give him an easy track to a completed case and you are more likely to get done.