How do I allow clip mask to show the linework within the window?

I am starting to understand how the clip mask and clip volume tools work, but when I do a clip mask and it appears that I have a hole in my rectangle (which I was trying to do). However, I am not able to see the linework underneath that hole:

Before performing the clip mask:

After performing the clip mask by element:

The white line that I have cutting through there not showing in the opening. I feel like I am not understanding these tools correctly. I have tried to find a tutorial that covers them in and out, but boy are they tricky.  I would appreciate any help one might provide!!!

Thanks in advance!