Only you know how well you perform at work. A manager will not want to manage you out if you perform well. If you’ve picked up things easily whilst being trained, get along well with the team and have a good rapport with management then this is a good move.
However, if you make lots of mistakes, are slow paced, arrive to work late, don’t pull your weight, don’t have a good rapport with management etc then this is a move to get you out.
I’ve been in a position where I was moved as a way of getting me out (it was so bad, I walked out on the job and drove home!) they moved me out of the way of everyone. No one liked me there, I was slow at my job and dropped too many balls/made constant mistakes. I knew I was rubbish at my job. Instead of getting me on performance, they went for the quick option: move me to an area I knew nothing about, where I was isolated. It worked.
So it also depends where they’re moving you to. Is the space better/worse? Will the job be better/worse? Are the team better/worse to work with?
You can be new and be brilliant at your job. We have a new starter at our work and she’s better than a lot of people who have been in the business for a few years! She’s been moved because she picks things up quickly, is adaptable, approachable, very intelligent, can do many things with her eyes shut. The move for her is a good move.