diff --git a/models/campaign.go b/models/campaign.go
index debca6ab..c091752f 100644
--- a/models/campaign.go
+++ b/models/campaign.go
@@ -536,77 +536,8 @@ func PostCampaign(c *Campaign, uid int64) error {
 	if err != nil {
 		log.Error(err)
 	}
-	// Insert all the results
-	resultMap := make(map[string]bool)
-	recipientIndex := 0
-	tx := db.Begin()
-	for _, g := range c.Groups {
-		// Insert a result for each target in the group
-		for _, t := range g.Targets {
-			// Remove duplicate results - we should only
-			// send emails to unique email addresses.
-			if _, ok := resultMap[t.Email]; ok {
-				continue
-			}
-			resultMap[t.Email] = true
-			sendDate := c.generateSendDate(recipientIndex, totalRecipients)
-			r := &Result{
-				BaseRecipient: BaseRecipient{
-					Email:     t.Email,
-					Position:  t.Position,
-					FirstName: t.FirstName,
-					LastName:  t.LastName,
-				},
-				Status:       StatusScheduled,
-				CampaignId:   c.Id,
-				UserId:       c.UserId,
-				SendDate:     sendDate,
-				Reported:     false,
-				ModifiedDate: c.CreatedDate,
-			}
-			err = r.GenerateId(tx)
-			if err != nil {
-				log.Error(err)
-				tx.Rollback()
-				return err
-			}
-			processing := false
-			if r.SendDate.Before(c.CreatedDate) || r.SendDate.Equal(c.CreatedDate) {
-				r.Status = StatusSending
-				processing = true
-			}
-			err = tx.Save(r).Error
-			if err != nil {
-				log.WithFields(logrus.Fields{
-					"email": t.Email,
-				}).Errorf("error creating result: %v", err)
-				tx.Rollback()
-				return err
-			}
-			c.Results = append(c.Results, *r)
-			log.WithFields(logrus.Fields{
-				"email":     r.Email,
-				"send_date": sendDate,
-			}).Debug("creating maillog")
-			m := &MailLog{
-				UserId:     c.UserId,
-				CampaignId: c.Id,
-				RId:        r.RId,
-				SendDate:   sendDate,
-				Processing: processing,
-			}
-			err = tx.Save(m).Error
-			if err != nil {
-				log.WithFields(logrus.Fields{
-					"email": t.Email,
-				}).Errorf("error creating maillog entry: %v", err)
-				tx.Rollback()
-				return err
-			}
-			recipientIndex++
-		}
-	}
-	return tx.Commit().Error
+	// Import the users
+	return UpdateUsers(c, totalRecipients)
 }
 
 //DeleteCampaign deletes the specified campaign
@@ -668,3 +599,78 @@ func CompleteCampaign(id int64, uid int64) error {
 	}
 	return err
 }
+
+// UpdateUsers updates the specified campaign's user assignments.
+func UpdateUsers(c *Campaign, totalRecipients int) error {
+	resultMap := make(map[string]bool)
+	recipientIndex := 0
+	tx := db.Begin()
+	for _, g := range c.Groups {
+		// Insert a result for each target in the group
+		for _, t := range g.Targets {
+			// Remove duplicate results - we should only
+			// send emails to unique email addresses.
+			if _, ok := resultMap[t.Email]; ok {
+				continue
+			}
+			resultMap[t.Email] = true
+			sendDate := c.generateSendDate(recipientIndex, totalRecipients)
+			r := &Result{
+				BaseRecipient: BaseRecipient{
+					Email:     t.Email,
+					Position:  t.Position,
+					FirstName: t.FirstName,
+					LastName:  t.LastName,
+				},
+				Status:       StatusScheduled,
+				CampaignId:   c.Id,
+				UserId:       c.UserId,
+				SendDate:     sendDate,
+				Reported:     false,
+				ModifiedDate: c.CreatedDate,
+			}
+			err := r.GenerateId(tx)
+			if err != nil {
+				log.Error(err)
+				tx.Rollback()
+				return err
+			}
+			processing := false
+			if r.SendDate.Before(c.CreatedDate) || r.SendDate.Equal(c.CreatedDate) {
+				r.Status = StatusSending
+				processing = true
+			}
+			err = tx.Save(r).Error
+			if err != nil {
+				log.WithFields(logrus.Fields{
+					"email": t.Email,
+				}).Errorf("error creating result: %v", err)
+				tx.Rollback()
+				return err
+			}
+			c.Results = append(c.Results, *r)
+			log.WithFields(logrus.Fields{
+				"email":     r.Email,
+				"send_date": sendDate,
+			}).Debug("creating maillog")
+			m := &MailLog{
+				UserId:     c.UserId,
+				CampaignId: c.Id,
+				RId:        r.RId,
+				SendDate:   sendDate,
+				Processing: processing,
+			}
+			err = tx.Save(m).Error
+			if err != nil {
+				log.WithFields(logrus.Fields{
+					"email": t.Email,
+				}).Errorf("error creating maillog entry: %v", err)
+				tx.Rollback()
+				return err
+			}
+			recipientIndex++
+		}
+	}
+
+	return tx.Commit().Error
+}
\ No newline at end of file