This is for magix developer not users, please. I always get that overly exited user trying to answer and speculate on everything.
I buy my Vegas Pro from steam store. I asked a question in their Vegas pro 18 community and there are zero moderators. No, steam is not responsible for any of that. The way steam works is developers who made the product are the ones who have to answer and moderate that forum for that product. Each product get their forum. Anyway, I want to know if that bundle that includes Vegas 14 and Vegas 18 also works for someone that has Vegas 15 and you put Vegas 14 because 14 was the oldest you started selling in steam. Is that bundle going to work on my Vegas 15?