diff --git a/webroot/config/networking/port/ui/js/models/portModel.js b/webroot/config/networking/port/ui/js/models/portModel.js
index 307c935fc..758c5945a 100644
--- a/webroot/config/networking/port/ui/js/models/portModel.js
+++ b/webroot/config/networking/port/ui/js/models/portModel.js
@@ -1101,7 +1101,8 @@ define([
                     mirror.mirror_to = {};
                     mirror.mirror_to.analyzer_name = newPortData.mirrorToAnalyzerName;
                     mirror.mirror_to.analyzer_ip_address = newPortData.mirrorToAnalyzerIpAddress;
-                    mirror.mirror_to.routing_instance = newPortData.mirrorToRoutingInstance;
+                    var ri = getValueByJsonPath(newPortData, 'mirrorToRoutingInstance', '');
+                    mirror.mirror_to.routing_instance = ri.split(':');
                     mirror.mirror_to.udp_port = Number(newPortData.mirrorToUdpPort);
                     newPortData.virtual_machine_interface_properties.interface_mirror = mirror;
                 }