diff -r 40e2940605a3 -r 4bec0525ef1b src/modeleditcontext.cpp
--- a/src/modeleditcontext.cpp	Wed Mar 18 17:11:23 2020 +0200
+++ b/src/modeleditcontext.cpp	Thu Mar 19 21:06:06 2020 +0200
@@ -23,6 +23,15 @@
 {
 }
 
+Model::EditContext::~EditContext()
+{
+	for (ldraw::id_t id : this->modifiedObjects)
+	{
+		const QModelIndex index = this->model().lookup(id);
+		emit this->model().dataChanged(index, index);
+	}
+}
+
 ldraw::id_t Model::EditContext::append(std::unique_ptr<ldraw::Object>&& object)
 {
 	const ldraw::id_t id = object->id;
@@ -36,15 +45,13 @@
 	this->model().remove(position);
 }
 
-void Model::EditContext::setObjectProperty(
-	ldraw::id_t id,
-	ldraw::Property property,
-	const QVariant& value)
+void Model::EditContext::setObjectPoint(ldraw::id_t id, int pointId, const glm::vec3& value)
 {
 	ldraw::Object* object = this->model().objectAt(id);
 	if (object != nullptr)
 	{
-		object->setProperty(property, value);
+		object->setProperty(ldraw::PropertyKeyValue{ldraw::pointProperty(pointId), QVariant::fromValue(value)});
+		modifiedObjects.insert(id);
 	}
 }