The article outlines the steps to edit an existing X-Reference
FOLLOW STEPS BELOW:
1. Under Navigation pane, expand 'X-References'
2. Select 'X-References'
3. Search for X-Reference
4. Right Click selected X-Reference and select 'Edit'
5. Make any changes required
6. All changes are auto-saved as soon as they are made
7. Select 'Close'
NB. For a quick tutorial watch below