You shouldn't deposit them back into your same old wallet that defeats the point of mixing, you need to make a new wallet. I would personally try to hide the fact that you are using a mixing service too, one option would be to cash out into something like Pecunix and then to an exhanger for a bank wire. That will hide the fact that you used a mixing service unless someone gets records from both Pecunix, the exchanger you used and the Bitcoin exchanger you use to get Pecunix. Your best bet would be to get it cashed out to a Western Union money wire and pick it up with a fake ID, or cash it out of an ATM with an anonymous debit card. That way you avoid having unaccounted for money suddenly showing up in your bank account from an E-currency exchangers bank account.