linkbutton not firing onclick event all the time!!

I have a form with a tabcontainer and 2 tabpanes.
On the first tabpane I have all the controls like textboxes, dropdownlists and etc... And also 3 link buttons. One button (New) that enables the controls so the user can fill them in and then click Save (other link button), and another one the cancels and disables the controls and clean them.
On the other tabpane I have a gridview with a list of all the record in the database. And when the user clicks the Selection button in the gridview the application send the user to the first tabpane and fills all the controls there with the record data, so the user can edit the data.
But when I click the selection button and he send the user to the other tabpane, regardless of what I change in the record data the Save button does not fire the on click event. But when I am already in the frst tabpane and click the New button and fill all the data in the controls, the save button works fine.


Can anyone help me ...