Recently I bought some Microstation file for my GIS course project, I want to use the contour lines in arcmap, I export them to Arcmap or even Autocad but all of the contour lines have zero elevation, I don't know how to fix it. Is there any problem with my exporting or there is problem with my source files.
How do I know that my source contour lines have the elevation or not ( I mean Microstation file)?
I upload all of my microstation files which one of them is for contour lines (33G.DGN). I would appreciate your help

This is the link for files :
http://www.mediafire...5lhubq3e8072yp9