If true then this would mean ukyo was able to import all the previous addresses and now have the same problem he had before. But that would mean the missing bitcoins arent at the old addresses anymore. Stolen or hacked or something.
I think he still has the control of the coins. Unlike Danny, who said the coins were lost, Ukyo said that they weren't
available.
The scenario that I believe is the most likely is that he is not currently allowed to return the coins because of some legal dispute. Remember that Ukyo is running an Australian exchange based in the US which was connected directly to a stock exchange that has been shut down.. I can imagine some legal issues could arise from that.