After creating a 2D mesh, all polygon edges are merged . The single edges as they were, are no longer selectable. Only one or 2 "long" edges are left to select. Why does this happen and can this be undone.
Solution
Edit the 2D mesh. If necessary, unfold the menu area "Model Cleanup Options ".
Here you will find the option: "Merge Edges ". Uncheck this option and press OK.
(Make sure the original geometry/part is loaded).
Now the mesh will be updated, and the polygon edges are no longer merged.
Notes