Briefcase icon disappears copying file to diskette due to Briefcase being moved.

Cause:

Briefcase functionality is easily misunderstood. Briefcase is moved instead of copied.

Solution:

Briefcase functionality is utilized by moving the Briefcase icon to the floppy drive. When moved, the Briefcase files and icon are transferred. When the Briefcase is moved, it is no longer accessible from its origin. The Briefcase can be copied, but its contents are not transferred.