yes, it is possible to do that. though it is usually easier to just edit the original I sketch to the size you need. but here is how to do it this way.
1) make the cut removing the material in the middle.
2) use the "move/copy bodies" feature to move one part to the other.
3) use the "combine" feature to make them one body again.
Thank you very much Jeremy for your time to answer. That is exactly what I needed! Thanks again!