Link Types are not importing with work items in CLM 5.0.2

Hi,

While importing the work items from one Project Area to another, I noticed that my link types are not imported. Although, I have added the column in my query (for work items export as a CSV) for "Tracks Requirements" and the data for the Tracks Requirements column can be seen in the downloaded CSV... but when I imported the work items, I cant see any requirements link in my work items...

I am exporting/importing the work items among different project areas on the same server.

may be I am missing any step(s), please help.

thanks in advance.