Work Order Header Short Text & Operation Short Text Issue

Hi All,

There is one issue while creating the work Order through IW31. When I put the Header Short Text same short text is transpose in to the First Operation short text as per STD SAP behaviour but if I change First Operation short text in creation(IW31) and save and come back in IW32 or IW33 it is showing the same Header Short Text but not changed one.

Why it is so???

I Want to Edit the First Operation short text in IW31 only not in IW32.

If anybody have explaination on this please let me know.Its SAP BUG????

I am Using ECC6.0

BR

Rakesh