Location of SQL History in Studio - response (1) by ramesh.d

Hello Mahesh,
You need not manually do entries into history.  Is there an error displayed while you are trying to import the History XML? You could check the error log by selecting Window-> Show View -> Other Windows -> Error Log.
Procedure to Import:
1) Click on Import History tool bar button from Teradata SQL History View.
2) Browse the History XML and in the source types select "History (*.xml)" and click on OK.
If still things are working, can you zip the XML file and attached it here.
Ramesh.