Mazo - This is the first I've heard of SewArt so had to have a look. It seems to be a good, inexpensive program, so I've downloaded the trial, but am doubtful that it will do as much as the more professional programs.
At the moment I have Generations which I purchased 2nd hand about 15 yrs ago, and last year bought Hatch ($1200).
I also have 4D Quilt Designer which is fabulous for quilting, but although it will convert designs to embroidery designs am not sure they won't need some editing to some extent before stitching out.