I followed your guide. I tried it with 7 eth first. I send my 7 eth to a new adress in my mist browser and the etc to to my etc deposit adress on Poloniex. At first i saw in the Classic blockchain explorer that the 7 etc arrived. But they haven;t shown up in my poloniex account yet.

About 30 min later I checked the same eth adress on the Classic blockchain explorer and I see this:

ITS ALMOST EMPTY! What could have happened here?

My eth arrived fine in the new adress of my mist browser.