diff --git a/cvat/apps/dataset_manager/annotation.py b/cvat/apps/dataset_manager/annotation.py
index 391b26bf..f8e7522a 100644
--- a/cvat/apps/dataset_manager/annotation.py
+++ b/cvat/apps/dataset_manager/annotation.py
@@ -754,7 +754,7 @@ class TrackManager(ObjectManager):
                 break
 
         if not prev_shape["outside"]:
-            shape = copy(prev_shape)
+            shape = deepcopy(prev_shape)
             shape["frame"] = end_frame
             shapes.extend(interpolate(prev_shape, shape))
 
diff --git a/cvat/apps/dataset_manager/tests/test_formats.py b/cvat/apps/dataset_manager/tests/test_formats.py
index 2a7c40cd..ddae97cf 100644
--- a/cvat/apps/dataset_manager/tests/test_formats.py
+++ b/cvat/apps/dataset_manager/tests/test_formats.py
@@ -824,7 +824,7 @@ class TaskAnnotationsImportTest(_DbTestBase):
                     {
                         "frame": 0,
                         "attributes": [],
-                        "points": [1.0, 2.1, 100, 300.222],
+                        "points": [1.0, 2.1, 10.6, 53.22, 100, 300.222],
                         "type": "polygon",
                         "occluded": False,
                         "outside": False
diff --git a/cvat/apps/engine/tests/test_rest_api.py b/cvat/apps/engine/tests/test_rest_api.py
index 01b85641..c55e70d3 100644
--- a/cvat/apps/engine/tests/test_rest_api.py
+++ b/cvat/apps/engine/tests/test_rest_api.py
@@ -4044,7 +4044,7 @@ class TaskAnnotationAPITestCase(JobAnnotationAPITestCase):
                             "points": [1.0, 2.1, 51, 36.6, 8.0, 11.0],
                             "type": "polygon",
                             "occluded": False,
-                            "outside": False
+                            "outside": True
                         },
                         {
                             "frame": 2,
@@ -4052,7 +4052,7 @@ class TaskAnnotationAPITestCase(JobAnnotationAPITestCase):
                             "points": [1.0, 2.1, 51, 36.6, 14.0, 15.0],
                             "type": "polygon",
                             "occluded": False,
-                            "outside": True,
+                            "outside": False,
                         }
                     ]
                 }]