The way it works right now is if you withdraw 55% then you instantly lose the other 45%, and your account gets deleted permanently. However, if you wait until the 15th the new exchange launches and you can get back potentially 100% or more.
Right, because it's reasonable to expect that you might get back more than 100% of your original funds. After all that money in all those bank accounts was supposedly frozen.
They said that users that stay for the relaunch will get more than 55%, but I wouldn't expect a great difference. The rest will be provided in debt tokens, similar to Bitfinex's scheme last year.
This is a bit of a shakedown on the part of the exchange. They know that a good deal of their clients have no interest in verifying their identity, and would love to have their accounts permanently deleted. By refunding more than half their funds, it's enough to get these clients to leave happily enough. This way, the exchange is attempting to retain the customers that are more likely to provide liquidity upon the relaunch, rather than try to immediately exit in whatever way possible (disrupting the markets, destroying liquidity).
I'd never use their new exchange at this point. Not with an FBI target on their back...