First line item texts tab has same texts as the header

Hi All ,

For any export/import declaration when I double click on the first line-item from the header, the texts tab of the first line item has the same texts types as in the header. This happens only for the first line and not the others. Also it happens only when I double click on the item from the header. Its fine when I directly go to the item.  Is this is a standard issue and should I raise it with SAP ? Kindly provide your valuable inputs. The pic_1.JPEG shows the header text types, and the pic_2.JPEG shows the first line item text types, which is same as the header, which is the issue.

Regards

Shankarnarayan