-email,user uuid,primary cluster/user
-person_a@example.com,x6b1s-tpzed-hb5n7doogwhk6cf,x6b1s
-person_b@example.com,x3982-tpzed-1vl3k7knf7qihbe,x3982
-person_b@example.com,x6b1s-tpzed-w4nhkx2rmrhlr54,x3982
+email,username,user uuid,primary cluster/user
+person_a@example.com,person_a,x6b1s-tpzed-hb5n7doogwhk6cf,x6b1s
+person_b@example.com,person_b,x3982-tpzed-1vl3k7knf7qihbe,x3982
+person_b@example.com,person_b,x6b1s-tpzed-w4nhkx2rmrhlr54,x3982