Deleting Part Substitutes
1. Enter Part Substitution in the Go to box to search for the page, then select the page from the resulting list of matches.
2. Highlight the part substitutes you want to delete.
3. Click the Delete icon 
. A window appears asking you if you are sure you want to delete the selected substitute.
. A window appears asking you if you are sure you want to delete the selected substitute.4. Click OK.