Hi mudassar,
Perhaps you are looking for Tcode IL04.
With this Tcode, the whole structure is copied to a new structure. You just need to give which structure you want to copy like: ABC-XYZ1 and new structure label like ABC-XYZ2. (Select in the pop-up check-boxeswhich all inside info you want to copy). Try first in Sandbox.
Jogeswara Rao K