Here is a link to the MTA exam you are thinking about taking. If Microsoft decides to retire the exam, it will be noted here, in bright red.
Here is a list from Microsoft of exams that are being retired, and exams that have already been retired. Straight from the source, no doubts.
Everyone hates change, but change is inevitable. Microsoft decides how they want to run their certification program. If they decide to change it back (very doubtful) great. Otherwise we move on and change with the times.
I remember when I was just getting started, I was studying for Server 2000 MCSA. After I had passed the first two of three exams, they released Windows 2003 Server, and announced the retirement of the 2000 Server MCSA. I had to rush to finish before it was retired, and then turn around and do it all again for 2003 Server. So certifications based on a technology, like the MCSA and MCSE are not perfect either. Me personally, LOVE what they are doing with the certification program. The new certifications align with todays environments. The ability to renew your certification, online, for free is AMAZING!
Embrace the change, no reason to stress, especially since you are just getting started!! Consider yourself lucky that you haven't spent money on exams for a certification that you can't finish!
Hope this helps!
**if the post above has answered the question, please mark the topic as solved.