clear ecs data from 'userData' after it is loaded to prevent duplicat…

…e ecs data on export (#10402)

packages/engine/src/scene/functions/loadGLTFModel.ts

@@ -60,14 +60,16 @@ import { createMaterialInstance } from '../materials/functions/materialSourcingF
 import { ComponentJsonType, EntityJsonType } from '../types/SceneTypes'
 import { getModelSceneID } from './loaders/ModelFunctions'
 
-export const parseECSData = (data: [string, any][]): ComponentJsonType[] => {
+export const parseECSData = (userData: Record<string, any>): ComponentJsonType[] => {
   const components: { [key: string]: any } = {}
   const prefabs: { [key: string]: any } = {}
-
+  const keysToRemove: string[] = []
+  const data = [...Object.entries(userData)]
   for (const [key, value] of data) {
     const parts = key.split('.')
     if (parts.length > 1) {
       if (parts[0] === 'xrengine') {
+        keysToRemove.push(key)
         const componentExists = ComponentMap.has(parts[1])
         const _toLoad = componentExists ? components : prefabs
         if (typeof _toLoad[parts[1]] === 'undefined') {
@@ -83,6 +85,11 @@ export const parseECSData = (data: [string, any][]): ComponentJsonType[] => {
     }
   }
 
+  // remove keys that have been processed as they will be exported in different format
+  for (const key of keysToRemove) {
+    delete userData[key]
+  }
+
   const result: ComponentJsonType[] = []
   for (const [key, value] of Object.entries(components)) {
     const component = ComponentMap.get(key)
@@ -106,7 +113,7 @@ export const parseECSData = (data: [string, any][]): ComponentJsonType[] => {
 }
 
 export const createObjectEntityFromGLTF = (obj3d: Object3D): ComponentJsonType[] => {
-  return parseECSData(Object.entries(obj3d.userData))
+  return parseECSData(obj3d.userData)
 }
 
 export const parseObjectComponentsFromGLTF = (