Letter to sanha

in respect of Q2175, your reply referred to a strongly worded letter from you to sanha.its been more than 2 weeks and there has been no changes subsequent to your letter.
after the ‘halaal’ meat leaves the slaughterer, it is then ‘soaked’ with hundreds of other birds in hot water with all the impurities, this leads to some of this impurities tainting the actual meat, does the ‘halaal slaughtered’ meat remain halaal after the scalder or does it become makrooh or haraam for Muslim consumption?