diff --git a/VB-ExportFileFilterAndGenBook/BlogBackupToBook.vbproj b/VB-ExportFileFilterAndGenBook/BlogBackupToBook.vbproj
index c80a4d3..69fd66b 100644
--- a/VB-ExportFileFilterAndGenBook/BlogBackupToBook.vbproj
+++ b/VB-ExportFileFilterAndGenBook/BlogBackupToBook.vbproj
@@ -16,6 +16,12 @@
+
+
+ PreserveNewest
+
+
+