diff --git a/src/Global/MultiViewportMode/index.js b/src/Global/MultiViewportMode/index.js
index f5531be..53ec9c0 100644
--- a/src/Global/MultiViewportMode/index.js
+++ b/src/Global/MultiViewportMode/index.js
@@ -231,7 +231,11 @@ async function syncData2(sdk, id, entityId) {
         if (obj.showView == 3) {
           options.show = false
         }
-        let target = await new obj.constructor(sdk2D, options)
+        let target = await sdk2D.entityMap.get(options.id)
+        if(target) {
+          await target.remove()
+        }
+        target = await new obj.constructor(sdk2D, options)
         target.onClick = obj.onClick
         target.onRightClick = obj.onRightClick
         target.onMouseMove = obj.onMouseMove
diff --git a/src/Obj/Base/GroundSvg/index.js b/src/Obj/Base/GroundSvg/index.js
index 5f74f8d..198aa89 100644
--- a/src/Obj/Base/GroundSvg/index.js
+++ b/src/Obj/Base/GroundSvg/index.js
@@ -1526,6 +1526,9 @@ class GroundSvg extends Base {
       controlPoints[9] = turf.destination(point, wh, 0 + angle, options).geometry.coordinates
 
       this.controlPoints = controlPoints
+      if(!this.sdk || !this.sdk.viewer) {
+        return
+      }
       for (let i = 0; i < this.controlPoints.length; i++) {
         let color = '#00ff0a'
         if (i === 5) {