Application Bundle Folder Path will not re-set to no folder

I have added a value to the ZENworks Explorer Folder Path field in the
Application Bundle, and removed it with the intention of removing the folder
from the appliction explorer. The result is a folder still exists with a
blank value - I am unable to remove the presense of the folder. I am
assuming this is a bug, or am I missing something? Has anyone else seen
this?