Fix 10545 by using position of array members

src/Mod/Mesh/App/Exporter.cpp

@@ -102,7 +102,7 @@ int Exporter::addObject(App::DocumentObject *obj, float tol)
     for (std::string & sub : expandSubObjectNames(obj, subObjectNameCache, 0)) {
         Base::Matrix4D matrix;
         auto sobj = obj->getSubObject(sub.c_str(), nullptr, &matrix);
-        auto linked = sobj->getLinkedObject(true, &matrix, false);
+        auto linked = sobj->getLinkedObject(true, &matrix, true);
         auto it = meshCache.find(linked);
         if (it == meshCache.end()) {
             if (linked->isDerivedFrom(Mesh::Feature::getClassTypeId())) {
@@ -128,6 +128,9 @@ int Exporter::addObject(App::DocumentObject *obj, float tol)
                 Py_DECREF(pyobj);
             }
         }
+        else if (it->second.getTransform() != matrix) {
+            it->second.setTransform(matrix);
+        }
 
         // Add a new mesh
         if (it != meshCache.end()) {