From 6b360083b679f29b27eb54aefbbda09443720fa0 Mon Sep 17 00:00:00 2001
From: "Liana.Bakradze" <liana.bakradze@jetbrains.com>
Date: Fri, 11 Nov 2016 17:55:12 +0300
Subject: [PATCH] fix deserialization of new local courses

---
 .../com/jetbrains/edu/learning/StudySerializationUtils.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/python/educational-core/student/src/com/jetbrains/edu/learning/StudySerializationUtils.java b/python/educational-core/student/src/com/jetbrains/edu/learning/StudySerializationUtils.java
index c7cb4f83c86a..076d3ef73b76 100644
--- a/python/educational-core/student/src/com/jetbrains/edu/learning/StudySerializationUtils.java
+++ b/python/educational-core/student/src/com/jetbrains/edu/learning/StudySerializationUtils.java
@@ -429,7 +429,9 @@ public class StudySerializationUtils {
               JsonArray placeholders = taskFileObject.getAsJsonArray(PLACEHOLDERS);
               for (JsonElement placeholder : placeholders) {
                 convertToAbsoluteOffset(document, placeholder);
-                convertToSubtaskInfo(placeholder.getAsJsonObject());
+                if (placeholder.getAsJsonObject().getAsJsonObject(SUBTASK_INFOS) == null) {
+                  convertToSubtaskInfo(placeholder.getAsJsonObject());
+                }
               }
             }
           }