Hi Sundar,
[quote user="Sundar"]But when I open the dgn file in Microstation I am not able to see the graphic.[/quote]
It has to be reported to ProStructures support and developers. As Brien described, if original handler is not available (e.g. in a plain MicroStation), extended element type is processed by default element hanlder. So it's up to ProStructures developers to create elements in such way they will be displayed in MicroStation.
[quote user="Sundar"]I tried "key-in mdl load fixrange", which did not solve my problem.[/quote]
Fixrange cannot help you if element is not displayed. This utility verify fixrange data (integer xmin,xmax,ymin...) stored as a part of graphic element header. When they are wrong, tools like Fit View don't work correctly. But fixrange does not verify anything else.
With regards,
Jan