To view or change the fields considered in Constituent Matching:

1.  Sign into The Raiser's Edge as a user with supervisor rights
2.  Select Online Express
3.  At the top, go to Account> Integration Options
4.  Select Constituent Matching
5.  View and edit the matching fields: 
User-added image
6. Click OK to save the changes

For example, if you only want to match/auto-link constituents based on the Last Name field, mark only the Last Name checkbox.  Users can also opt to find Exact Matches, Include Inactive constituents from RE, and Include Deceased records.