When an attempt is made to carry out a delete of a deep copy dashboard this is not possible. The procedure below has been followed
Login as foglight.
go to Configuration -> Definitions.
Click the small arrow next to the new sub-module created during deep_copy.(ie the target module )
Then login in as different user, to see if the deep copy dashboard entry has been deleted from option Other User Dashboards.
When you try and select the small arrow next the sub-module it is not available
Check the user you are logged in as has Cartridge Developer Privileges via the user management dashboard
Administration | Users & Security Management | Manage Users, Groups, Roles
Select the user you are using | Select edit | Next and give the user Cartridge Developers privileges | then select Next
Logout and Log back in again