Fictionallag

I recently logged into my account for the first time in a very long time, and there's the silver, and gold servers now instead of the red and blue. I clicked on the gold sever not knowing what would happened and I ended up with all of my old stuff. Except now I know that everyone I played with before is on the silver server, and I haven't played since. Is it possible to transfer to the silver server from the gold to be able to play with my friends again and keep what I already have?