Here is the reason why the white hackers move the funds to the exchanges:
https://blog.bity.com/2016/08/13/the-white-hats-and-dao-wars-behind-the-scenes/Why the choice to sell ETC for ETH was made
Originally the WHG began to develop a way to distribute the funds in a fair manner on the ETC chain, but as they were developing this solution, many problems arose that were challenging due to conflicting realities:
Threat of a replay on the Ethereum chain: Most DAO Token Holders are likely to have received ether from the Hard Fork withdraw contract in the same address that they would receive ETC from the WHG. This creates a technical issue for almost all DAO Token Holders, as there is a large percentage of people that are likely to have their ETC transactions replayed on the Ethereum Blockchain, potentially sending ether to a contract that does not exist or to an untrusted third party not likely to return the ether.
DAO-Classic’s ownership was corrupted: After testing several exchanges, we found that some allowed people to withdraw DAO-C, and others were using a replay contract preventing the withdrawal of DAO-C. Because there is no market for these tokens, the ownership of DAO tokens on the ETC chain has not been respected and is not useful for the distribution of ETC on the chain.
A fair distribution of value is very difficult to achieve: Some DAO Token Holders with large holdings contacted the WHG wanting to know when the distribution would happen so that they could be prepared to sell their ETC for ETH before the rest of the smaller DAO Token Holders would get their ETC. This will give an unfair distribution of value to DAO Token Holders with smaller holdings. If a DAO Token Holder was in the right time zone when the withdraw contract became available then they could sell while others might be asleep or on vacation. Whereas if the ETC was exchanged for ETH then we could have averaged out the value using the currency DAO Token Holders sent to the DAO in the first place, ether. We felt it was less likely the DAO Token Holders would liquidate their extra ether and this would be less of an issue.
There are not many tools on the ETC chain: This means that one of the first ETC Dapps would have to be created. The ETC chain does not have as many advanced tools and block explorers like the ETH chain does, and since most DAO Token Holders do not have their blockchains synced to the Classic chain, it will be nearly impossible for them to independently verify the transactions if something goes wrong without downloading the blockchain from scratch. Etherscan.io and live.ethercamp do not exist in the ETC chain, and the explorers available do not show internal contract transactions, do not show token balances, and do not seem to be online 100% of the time.
There have been many threats to the ETC chain: Various posts have come out that have said there are plans to execute a 51% attack on the ETC chain, this chain is very young and seems to have legitimate threats, however these threats are becoming less likely as time goes on.
Most ETC is held by Ethereum supporters likely to sell their ETC: If you have been in crypto long enough, you know the term pump ‘n dump. It typically involves a malicious actor gathering a large amount of digital currency, either through a premine, or buying them cheap on the market and then pumping the price in various ways and selling their tokens after the speculation bubble. ETC is not a pump ‘n dump at all, but there is potential for it to have a similar issue because there seems to be a bit of an us vs. them attitude between the two communities and the Ethereum community still holds most of the ETC funds. Because of this, there is potential for someone who owns a large amount of ether to crash the market at any time, if coordinated with a 51% attack, this could potentially kill the value of the chain.
The DAO Attacker can dump their ETC soon: On the 2nd of September the original attacker receives ~5% of the total ETC supply. What they will do with it is unknown but it is important to deploy the withdraw contract and start the distribution before that time.
Because of these issues, the WHG researched what options they had to turn the ETC into ETH and they came to us for help. After hearing their explanations on why distributing ETC was problematic and not in the best interest of the DAO Token Holders, we were convinced that converting at least a significant portion of ETC to ETH was in the best interest of the DAO Token Holders and our lawyers confirmed it was a legally justifiable position.