diff --git a/src/main/java/neatlogic/module/rdm/api/iteration/SaveIterationApi.java b/src/main/java/neatlogic/module/rdm/api/iteration/SaveIterationApi.java
index 36e798a780398d3ce82d5636c47b3734854ae254..1aed5dc160641d6014a96f0778eca5b8b882a6a3 100644
--- a/src/main/java/neatlogic/module/rdm/api/iteration/SaveIterationApi.java
+++ b/src/main/java/neatlogic/module/rdm/api/iteration/SaveIterationApi.java
@@ -61,6 +61,8 @@ public class SaveIterationApi extends PrivateApiComponentBase {
     public Object myDoService(JSONObject paramObj) {
         Long id = paramObj.getLong("id");
         IterationVo iterationVo = JSONObject.toJavaObject(paramObj, IterationVo.class);
+        iterationVo.setStartDate(null);
+        iterationVo.setEndDate(null);
         if (id == null) {
             iterationMapper.insertIteration(iterationVo);
         } else {