telecharge
Got this email on July 29...still hasn't happened.

You need to say what "hasn't happened." Did you request a redemption code and not get it? Or did you think the redemption code wasn't for the Steam version? Or did you not register in time, then contacted cakewalk support without an answer? Also, was the email from Cakewalk or Steam?That would make a difference as well.
telechargeNever got the Advanced Workshop: Modern Drum Production videos either.
That's available through the Cakewalk Command Center. Don't know if it's available on Steam or not, try Steam support or the Steam forums.
telechargeI don't remember exactly, but in addition to the rep who said he would do it, this is likely what led me to believe I could transfer my licenses.
It's a post from 2015 that stated "I do not speak for Cakewalk but I do recall the question about upgrading from Steam when the new SONAR was released. It was not immediately available on the Steam site and CW staff replied that it was possible to purchase from the SONAR site. At the time it took Customer Support involvement because there was no linkage between Steam and CW store purchases. I suspect this still might be the case but cannot say for sure not having purchased anything from Steam."
Not exactly a definitive statement from Cakewalk so I don't know why you brought it up, especially since Ryan already apologized that someone who DOES speak for Cakewalk gave you incorrect information.
Ryan wrote a detailed email to you at 7 PM Boston time, so first of all that's even more "non-anecdotal" evidence that what I said is true. Second, he acknowledged your frustration, apologized that you were given the wrong information from someone at Cakewalk, and apologized for the delay in responding. However, it's also clear that since you said Steam provides support for their client, and since your issue apparently involved attempting to move SONAR from the Steam client to the Command Center (at least that what it seems like to me), it is Steam's issue to solve because it starts with their client. Steam should have been your logical first point of contact, not Cakewalk.
I recommend thanking Ryan for the apology and detailed response, and then pursue your Steam issues with Steam. If
they tell you that moving from their client to Cakewalk is Cakewalk's problem, then CW needs to know that this Steam's position, and pursue a resolution.