ClearingHouse records transactional information using the viacoin blockchain. To send XCH from Alice to Bob means sending a small amount of Viacoin to addresses. Those transactions have the metadata in them. This means ClearingHouse can then go back over the blockchain and extract the data from the blockchain.
Does that make sense? When you send XCH the XCH control moves from your address to the destination address. No XCH is reduced, you only pay a tiny *viacoin* fee for making the transaction (just as you would for a normal viacoin transaction).
Are you saying that I can convert the 500 XCH that is now represented as .0012 VIAcoin in my wallet back into 500 XCH (minus the small VIA fee) by sending it from my VIAcoin wallet back to ClearWallet?
If this is correct, is there any special procedure? (Or would I just send .0012 VIAcoin to my ClearWallet address?)