diff --git a/src/main/java/com/eactive/eai/transformer/engine/Transformer.java b/src/main/java/com/eactive/eai/transformer/engine/Transformer.java
index 3ec80c1..aecf795 100644
--- a/src/main/java/com/eactive/eai/transformer/engine/Transformer.java
+++ b/src/main/java/com/eactive/eai/transformer/engine/Transformer.java
@@ -425,9 +425,16 @@ public class Transformer {
             errors.add(targetMessage.toString());
             return;
         }
+        String type = targetMessage.getLayout().getLayoutType().getName();
         
-//    	Grid to Group 맵핑 Grid기준 첫번째 항목만 맵핑되도록 원래는 Grid가 count수만큼 반복부 돌며, 덮어씌기가 되어 마지막 항목의 값이 맵핑됨. 
-        if ( resultItem.getValue() != null ) return;
+        	
+        if ( resultItem.getValue() != null ) {
+        	if ( !( resultItem.getValue() instanceof byte[] && ((byte[])resultItem.getValue()).length == 0 ) ) {
+        		return;
+        	}
+        	 
+        }
+
         /**
          * 
          *   1. field|attribute : transform 을 바로 진행한다. (transformEach)