diff --git a/client/src/components/trans-routes/RouteEdit.js b/client/src/components/trans-routes/RouteEdit.js
index eca1975..00dac77 100644
--- a/client/src/components/trans-routes/RouteEdit.js
+++ b/client/src/components/trans-routes/RouteEdit.js
@@ -120,6 +120,37 @@ const RouteEdit = () => {
     return true;
   };
 
+  const normalizeAddressText = (value) => {
+    return (value || '')
+      .toString()
+      .toLowerCase()
+      .replace(/\([^)]*\)/g, ' ')
+      .replace(/[^a-z0-9]/g, ' ')
+      .replace(/\s+/g, ' ')
+      .trim();
+  };
+
+  const formatStructuredAddress = (line1, line2, city, state, zipCode, note) => {
+    const cityState = [city, state].filter(Boolean).join(', ');
+    const mainAddress = [line1, line2, cityState, zipCode]
+      .filter((item) => item && String(item).trim() !== '')
+      .join(' ')
+      .trim();
+    const addressNote = (note || '').trim();
+    if (!mainAddress) return '';
+    return addressNote ? `${mainAddress} (${addressNote})` : mainAddress;
+  };
+
+  const getStructuredAddresses = (customerProfile) => {
+    if (!customerProfile) return [];
+    return [
+      formatStructuredAddress(customerProfile.address_line_1, customerProfile.address_line_2, customerProfile.city, customerProfile.state, customerProfile.zip_code, customerProfile.address_note),
+      formatStructuredAddress(customerProfile.address2_line_1, customerProfile.address2_line_2, customerProfile.city2, customerProfile.state2, customerProfile.zip_code2, customerProfile.address2_note),
+      formatStructuredAddress(customerProfile.address3_line_1, customerProfile.address3_line_2, customerProfile.city3, customerProfile.state3, customerProfile.zip_code3, customerProfile.address3_note),
+      formatStructuredAddress(customerProfile.address4_line_1, customerProfile.address4_line_2, customerProfile.city4, customerProfile.state4, customerProfile.zip_code4, customerProfile.address4_note)
+    ].filter((addr) => (addr || '').trim() !== '');
+  };
+
   const updateCurrentRoute = () => {
     try {
       if (!validateRoute()) {
@@ -129,7 +160,29 @@ const RouteEdit = () => {
       const filteredCustomerList = (newCustomerList || []).filter(
         (customer) => customer?.customer_route_status !== PERSONAL_ROUTE_STATUS.SCHEDULED_ABSENT
       );
-      let data = Object.assign({}, currentRoute, {name: routeName, driver: newDriver, vehicle: newVehicle, type: newRouteType, route_customer_list: filteredCustomerList});
+      const existingRouteCustomers = currentRoute?.route_customer_list || [];
+      const existingByCustomerId = new Map(existingRouteCustomers.map((c) => [c?.customer_id, c]));
+      const customerProfileById = new Map((allCustomers || []).map((c) => [c?.id, c]));
+      const stabilizedCustomerList = filteredCustomerList.map((customerItem) => {
+        const existingCustomer = existingByCustomerId.get(customerItem?.customer_id);
+        if (!existingCustomer?.customer_address) return customerItem;
+
+        const customerProfile = customerProfileById.get(customerItem?.customer_id);
+        const structuredAddresses = getStructuredAddresses(customerProfile);
+        if (structuredAddresses.length === 0) return customerItem;
+
+        const structuredAddressSet = new Set(structuredAddresses.map(normalizeAddressText).filter(Boolean));
+        const existingAddressNormalized = normalizeAddressText(existingCustomer.customer_address);
+        if (!existingAddressNormalized) return customerItem;
+
+        // Keep the route's current address if it no longer exists in DB structured addresses.
+        if (!structuredAddressSet.has(existingAddressNormalized)) {
+          return Object.assign({}, customerItem, { customer_address: existingCustomer.customer_address });
+        }
+        return customerItem;
+      });
+
+      let data = Object.assign({}, currentRoute, {name: routeName, driver: newDriver, vehicle: newVehicle, type: newRouteType, route_customer_list: stabilizedCustomerList});
       if (estimatedStartTime && estimatedStartTime !== '') {
         data = Object.assign({}, data, {estimated_start_time: combineDateAndTime(currentRoute.schedule_date, estimatedStartTime)})
       }
diff --git a/client/src/components/trans-routes/RoutesDashboard.js b/client/src/components/trans-routes/RoutesDashboard.js
index cef455c..257c2c9 100644
--- a/client/src/components/trans-routes/RoutesDashboard.js
+++ b/client/src/components/trans-routes/RoutesDashboard.js
@@ -148,6 +148,13 @@ const RoutesDashboard = () => {
     return `${routeNames.slice(0, -1).join(', ')}, and ${routeNames[routeNames.length - 1]}`;
   };
 
+  const formatRouteAddressList = (routes = []) => {
+    const parts = (routes || []).map((route) => `Route ${route.routeName}(address: ${route.customerAddress || 'N/A'})`);
+    if (parts.length <= 1) return parts[0] || '';
+    if (parts.length === 2) return `${parts[0]}, ${parts[1]}`;
+    return `${parts.slice(0, -1).join(', ')}, and ${parts[parts.length - 1]}`;
+  };
+
   const getCustomerTypeLabel = (type) => CUSTOMER_TYPE_TEXT[type] || type || 'N/A';
   const getCustomerKey = (customer) => {
     return customer?.customer_id || customer?.id || normalizeName(customer?.customer_name || customer?.name);
@@ -201,26 +208,17 @@ const RoutesDashboard = () => {
     });
 
     const issues = [];
-    const seenPairs = new Set();
     byCustomer.forEach((records) => {
-      if (records.length < 2) return;
-      for (let i = 0; i < records.length; i += 1) {
-        for (let j = i + 1; j < records.length; j += 1) {
-          const first = records[i];
-          const second = records[j];
-          if (first.routeId === second.routeId) continue;
-          const pairKey = [first.customerKey, first.routeId, second.routeId].sort().join('|');
-          if (seenPairs.has(pairKey)) continue;
-          seenPairs.add(pairKey);
-          issues.push({
-            customerName: first.customerName || second.customerName,
-            customerAddressA: first.customerAddress || '',
-            customerAddressB: second.customerAddress || '',
-            routeA: first.routeName,
-            routeB: second.routeName
-          });
-        }
-      }
+      const uniqueRoutes = Array.from(
+        new Map(
+          records.map((item) => [item.routeId, { routeId: item.routeId, routeName: item.routeName, customerAddress: item.customerAddress || '' }])
+        ).values()
+      );
+      if (uniqueRoutes.length < 2) return;
+      issues.push({
+        customerName: records[0]?.customerName || 'Unknown',
+        routes: uniqueRoutes
+      });
     });
     return issues;
   };
@@ -1982,7 +1980,7 @@ const RoutesDashboard = () => {
                       <div className="fw-bold mb-2">Inbound Issues</div>
                       {checkRoutesResult.inbound.map((issue, idx) => (
                         <div key={`inbound-issue-${idx}`} className="mb-2">
-                          both {issue.routeA} and {issue.routeB} route has {issue.customerName}, {issue.customerName}&apos;s address on {issue.routeA} is {issue.customerAddressA || 'N/A'}, on {issue.routeB} is {issue.customerAddressB || 'N/A'}
+                          {issue.customerName} appears on multiple routes: {formatRouteAddressList(issue.routes)}
                         </div>
                       ))}
                     </div>
@@ -1992,7 +1990,7 @@ const RoutesDashboard = () => {
                       <div className="fw-bold mb-2">Outbound Issues</div>
                       {checkRoutesResult.outbound.map((issue, idx) => (
                         <div key={`outbound-issue-${idx}`} className="mb-2">
-                          both {issue.routeA} and {issue.routeB} route has {issue.customerName}, {issue.customerName}&apos;s address on {issue.routeA} is {issue.customerAddressA || 'N/A'}, on {issue.routeB} is {issue.customerAddressB || 'N/A'}
+                          {issue.customerName} appears on multiple routes: {formatRouteAddressList(issue.routes)}
                         </div>
                       ))}
                     </div>