diff --git a/src/main/java/cokr/xit/foundation/data/paging/MapperSupport.java b/src/main/java/cokr/xit/foundation/data/paging/MapperSupport.java
index cfc40fe..4829249 100644
--- a/src/main/java/cokr/xit/foundation/data/paging/MapperSupport.java
+++ b/src/main/java/cokr/xit/foundation/data/paging/MapperSupport.java
@@ -90,16 +90,19 @@ public class MapperSupport extends MybatisPlugin {
 		String userID = currentUser().getId();
 		switch (sqlType) {
 		case INSERT:
+			if (!isEmpty(entity.getCreatedBy())) return;
 			entity.setCreatedBy(userID);
 			entity.setCreatedAt(now);
 			entity.setModifiedBy(userID);
 			entity.setLastModified(now);
 			break;
 		case UPDATE:
+			if (!isEmpty(entity.getModifiedBy())) return;
 			entity.setModifiedBy(userID);
 			entity.setLastModified(now);
 			break;
 		case DELETE:
+			if (!isEmpty(entity.getRemovedBy())) return;
 			entity.setRemovedBy(userID);
 			entity.setRemovedAt(now);
 			entity.setUseYN("N");