Clicking the "Delete" button in the main import
selection dialog or holding down the SHIFT key and clicking the "Delete"
button in any one of the other import dialog, opens the "Delete Multiple Import
Sets" window. If the SHIFT key is not held down when clicking the
"Delete" button in any of the import dialogs other than the main import
selection dialog, then the "Delete an Import Set"
confirmation dialog appears instead.
In the dialog, select the saved Import Sets to be deleted, and click the "OK"
button.
