Hide/Show Edge command hides or shows an edge of the sweep.
Location of Hide/Show Edge Command
You can access it from the ribbon menu Modify tab under Entity Edit title.
Click the Hide/Show Edge icon.
Click the edge you want to keep in the sweep you previously drew.
Exit the command by pressing the Esc key, the edge of the sweep will no longer be visible.
Repeat the same process to make a hidden edge visible again.
The initial version of the sweep
Selecting the edge you want to hide
Hiding edge with hide/show edge