diff --git a/src/document/migrate-scene-document.ts b/src/document/migrate-scene-document.ts
index febc1546..4dbb704a 100644
--- a/src/document/migrate-scene-document.ts
+++ b/src/document/migrate-scene-document.ts
@@ -3298,18 +3298,27 @@ function readCameraRigEntity(value: unknown, label: string): EntityInstance {
     ),
     position: readVec3(value.position, `${label}.position`),
     rigType: expectLiteralString(value.rigType, "fixed", `${label}.rigType`),
-    priority: expectNonNegativeFiniteNumber(
-      value.priority,
-      `${label}.priority`
-    ),
-    defaultActive: expectBoolean(value.defaultActive, `${label}.defaultActive`),
+    priority:
+      value.priority === undefined
+        ? undefined
+        : expectNonNegativeFiniteNumber(value.priority, `${label}.priority`),
+    defaultActive:
+      value.defaultActive === undefined
+        ? undefined
+        : expectBoolean(value.defaultActive, `${label}.defaultActive`),
     target: readCameraRigTargetRef(value.target, `${label}.target`),
-    targetOffset: readVec3(value.targetOffset, `${label}.targetOffset`),
+    targetOffset:
+      value.targetOffset === undefined
+        ? undefined
+        : readVec3(value.targetOffset, `${label}.targetOffset`),
     transitionMode,
-    transitionDurationSeconds: expectNonNegativeFiniteNumber(
-      value.transitionDurationSeconds,
-      `${label}.transitionDurationSeconds`
-    ),
+    transitionDurationSeconds:
+      value.transitionDurationSeconds === undefined
+        ? undefined
+        : expectNonNegativeFiniteNumber(
+            value.transitionDurationSeconds,
+            `${label}.transitionDurationSeconds`
+          ),
     lookAround: readCameraRigLookAroundSettings(
       value.lookAround,
       `${label}.lookAround`
diff --git a/tests/domain/build-runtime-scene.test.ts b/tests/domain/build-runtime-scene.test.ts
index 8613f23f..4d32c230 100644
--- a/tests/domain/build-runtime-scene.test.ts
+++ b/tests/domain/build-runtime-scene.test.ts
@@ -680,6 +680,7 @@ describe("buildRuntimeSceneFromDocument", () => {
           }
         }
       ],
+      cameraRigs: [],
       sceneEntries: [
         {
           entityId: "entity-scene-entry-house-front",
@@ -1134,6 +1135,7 @@ describe("buildRuntimeSceneFromDocument", () => {
     expect(runtimeScene.navigationMode).toBe("thirdPerson");
     expect(runtimeScene.entities).toEqual({
       playerStarts: [],
+      cameraRigs: [],
       sceneEntries: [],
       npcs: [],
       soundEmitters: [],
diff --git a/tests/unit/runtime-host.test.ts b/tests/unit/runtime-host.test.ts
index bd759eb4..8d06674d 100644
--- a/tests/unit/runtime-host.test.ts
+++ b/tests/unit/runtime-host.test.ts
@@ -262,6 +262,7 @@ describe("RuntimeHost", () => {
         y: 1.6,
         z: 0
       },
+      transitionMode: "cut",
       lookAround: {
         enabled: true,
         yawLimitDegrees: 10,
diff --git a/tests/unit/viewport-focus.test.ts b/tests/unit/viewport-focus.test.ts
index fcebbb77..d7a1abcd 100644
--- a/tests/unit/viewport-focus.test.ts
+++ b/tests/unit/viewport-focus.test.ts
@@ -196,14 +196,9 @@ describe("resolveViewportFocusTarget", () => {
       ids: [cameraRig.id]
     });
 
-    expect(focusTarget).toEqual({
-      center: {
-        x: -3,
-        y: 2.28,
-        z: 5
-      },
-      radius: expect.any(Number)
-    });
+    expect(focusTarget?.center.x).toBeCloseTo(-3);
+    expect(focusTarget?.center.y).toBeCloseTo(2.28);
+    expect(focusTarget?.center.z).toBeCloseTo(5);
     expect(focusTarget?.radius).toBeGreaterThan(0.45);
   });