Regarding Bter...
On 27 March they responded to all my open tickets saying YAC deposits were fixed. All of the deposits I made over the past few weeks did in fact appear.
On 29 March, I made two new deposits, and neither have appeared after over 100 confirmations. I've opened another ticket.
I am done with Bter. My thanks again to Yobit and Alcurex for giving us a reliable trading platform.