diff --git a/server/device.py b/server/device.py
index 0a2dce28..acd7e2e7 100755
--- a/server/device.py
+++ b/server/device.py
@@ -376,11 +376,15 @@ def update_devices_data_from_scan (db):
                     FROM CurrentScan
                     WHERE Devices.devMac = CurrentScan.cur_MAC
                 )
-                WHERE EXISTS (
-                    SELECT 1
-                    FROM CurrentScan
-                    WHERE Devices.devMac = CurrentScan.cur_MAC
-                        AND CurrentScan.cur_NetworkNodeMAC IS NOT NULL AND CurrentScan.cur_NetworkNodeMAC NOT IN ("", "null")
+                WHERE 
+                    (devParentMAC IS NULL OR devParentMAC IN ("", "null", "(unknown)", "(Unknown)"))
+                    AND                
+                    EXISTS (
+                        SELECT 1
+                        FROM CurrentScan
+                        WHERE Devices.devMac = CurrentScan.cur_MAC
+                            AND CurrentScan.cur_NetworkNodeMAC IS NOT NULL AND CurrentScan.cur_NetworkNodeMAC NOT IN ("", "null")
+                    
                 )""")
 
     # Update only devices with empty or NULL devSite 
diff --git a/server/networkscan.py b/server/networkscan.py
index 6ed3aa8d..0429d62a 100755
--- a/server/networkscan.py
+++ b/server/networkscan.py
@@ -66,7 +66,7 @@ def process_scan (db):
 
     # Clear current scan as processed 
     # 🐛 CurrentScan DEBUG: comment out below when debugging to keep the CurrentScan table after restarts/scan finishes
-    db.sql.execute ("DELETE FROM CurrentScan") 
+    # db.sql.execute ("DELETE FROM CurrentScan") 
   
     # Commit changes    
     db.commitDB()