Microstation V8i copy/paste duplication problem

Hello,

I am using Microstation V8i. I am trying to copy few elements and test from one DGN file to another DGN file. Whenever I copy and paste same in other dgn file its duplicating my copied elements.

For example : When I copy one line and paste that line in other drawing. After pasting it when I am selecting it. It shows me two lines at same place. Even if I am copying text and pasting it to other dgn file it paste two similar text at same location. . Is there solution to this problem? even though its not creating any problem in my drawings but its weird as I am copying single thing and its pasting as double.

is there command to select duplicate elements and delete it?

I appreciate any help on subject matter.

Thanks,

Jignesh