I deleted hundreds of programs off my old EHD in preparation for moving the data back onto the Hopper and then onto my new 6TB EHD. My new EHD would not show up until I unplugged my old EHD. I successfully formatted the new EHD and plugged in the old one again. It failed to show up until I had unplugged the newly formatted one! I believe this is a bug because my 6TB drive cannot be simultaneously connected along with my old EHD.
Anyhow, after I plugged the old one back in, it still had all the programs I had deleted. The only way I got those programs deleted was to delete them again and leave everything as is for hours or perhaps overnight. I believe there is a trashcan for the EHDs even if we can't see it anywhere.