Latest questions about "drawing tools"

I have Apex 5 sketch program and drawing 1st area. When attempting to add 2nd area to the sketch by F4 or draw command it indicates that there is a draw section already open.

I'm drawing 2D files with some drawing programs. I wonder if SewArt supports DXF, DWG, IGS file formats. These formats are supported by the most popular 2D software.

I cannot paste a drawing into a new layer drawing and hide it. I can hide a new drawing I create on that layer, but I cannot hide a pasted item, even if I use the outline pen and change colors.