Hi, anyone have some idea here?

I have a drawing of a part, which I was able to select an edges and use "Hide/Show Edge" command to hide the radius and dia (this is what I want)

and

I have a drawing of a assembly, which I was not able to select an edges and use "Hide/Show Edge" command to hide radius and dia?

I know there a lot of quark ball things working with part drawings vs assembly drawings (cosmetic threads)

cheers!