diff --git a/src/services/sync.service.ts b/src/services/sync.service.ts
index 9896d82b..c7c55d48 100644
--- a/src/services/sync.service.ts
+++ b/src/services/sync.service.ts
@@ -164,8 +164,13 @@ export class SyncService {
         }
       } else {
         if (!u.deleted) {
-          processedActiveUsers.set(u.email, JSON.stringify(u));
-          uniqueUsers.push(u);
+          // Check that active UserEntry does not conflict with a deleted UserEntry
+          if (processedDeletedUsers.has(u.email)) {
+            duplicateEmails.push(u.email);
+          } else {
+            processedActiveUsers.set(u.email, JSON.stringify(u));
+            uniqueUsers.push(u);
+          }
         } else {
           // UserEntrys with duplicate email will not throw an error if they are all deleted. They will be synced.
           processedDeletedUsers.set(u.email, JSON.stringify(u));