There have been issues while pasting entities after cut/copy. The pasted entities retained the id of the id being copied/cut. We fixed this issue.
The implementation of the same has not been done for line. So I did it for line too.
Also live preview was seen just twice in my yesterday’s implementation but now I get only: The program has finished unexpectedly. This is significant to be a part of the eCAD. So I will focus on this now.