So I was away from halo 3 for a while...

Playing other games etc. I went back to halo 3 and found that I no longer have all my maps, videos, pics, gametypes etc. What’s the explanation for this? And how could they be deleted off bungies servers if they were saved to my hard drive?

Also, most importantly: Is there any way to find my old files on their site? I want to find my favorite videos and maps again.

No one can answer?

New xbox maybe? 343i is terrible when it comes to H3.
That’s all I can think off, I’ve got my own xbox and I had to download everything again.