If you have the unlocked version of Audition 3 and its authentication key, then yes it still works. But only with that key - no others will. This was available from Adobe for quite a while, until their lawyers instructed them to remove it - and indeed all earlier versions of everything. All you will find for any software now is the current version and its -1.
Well I'll warn you now - if you post any specific information about how to do this, it will be removed. This is an Adobe site, and we have to stick to Adobe's rules - however much you dislike them.
Whatever. Both programs are working. There's no reason to insult people for being ignorant. As much as could be understood the retail version of the daw works with its own serial from the purchase. I'm not sure what you are talking about. It sounds like you're being grumpy.