No, you would only be changing the location of the mass with respect to it’s location in 4 dimensions.
No. Every atom of your body, the chair you sit in, the building you are in, the planet you are on has been around, in some form or another since the beginning of time.
If you could send back or forward in time, a person or a paper clip, it doesn’t matter (pun), there would be the two copies of that same matter in existence at the same time, and that is essentially ‘creating’ matter where none existed...................