lucy24 - 7:50 am on Jun 27, 2013 (gmt 0)
You haven't explained what's behind "Master-Product-Key". Or same with directory / at the end. If this second form is correct, are we talking about a real, physical directory with an index page?
On the whole, on balance, what with one thing and another, I would generally tend to think it's not a 100% good idea to go live with a redirect that leads to a 404.