--- a/OrthancServer/ServerEnumerations.h	Thu Jan 24 10:54:47 2019 +0100
+++ b/OrthancServer/ServerEnumerations.h	Thu Jan 24 10:55:19 2019 +0100
@@ -56,14 +56,6 @@
     StoreStatus_FilteredOut     // Removed by NewInstanceFilter
   };
 
-  enum IdentifierConstraintType
-  {
-    IdentifierConstraintType_Equal,
-    IdentifierConstraintType_SmallerOrEqual,
-    IdentifierConstraintType_GreaterOrEqual,
-    IdentifierConstraintType_Wildcard        /* Case sensitive, "*" or "?" are the only allowed wildcards */
-  };
-
   enum DicomTagType
   {
     DicomTagType_Identifier,   // Tag that whose value is stored and indexed in the DB
@@ -80,6 +72,17 @@
     ConstraintType_List
   };
 
+  namespace Compatibility
+  {
+    enum IdentifierConstraintType
+    {
+      IdentifierConstraintType_Equal,
+      IdentifierConstraintType_SmallerOrEqual,
+      IdentifierConstraintType_GreaterOrEqual,
+      IdentifierConstraintType_Wildcard        /* Case sensitive, "*" or "?" are the only allowed wildcards */
+    };
+  }
+
 
   /**
    * WARNING: Do not change the explicit values in the enumerations
@@ -93,8 +96,7 @@
     GlobalProperty_FlushSleep = 2,
     GlobalProperty_AnonymizationSequence = 3,
     GlobalProperty_JobsRegistry = 5,
-    GlobalProperty_TotalCompressedSize = 6,     // Reserved for Orthanc > 1.5.0
-    GlobalProperty_TotalUncompressedSize = 7,   // Reserved for Orthanc > 1.5.0
+    GlobalProperty_GetTotalSizeIsFast = 6,      // New in Orthanc 1.5.2
     GlobalProperty_Modalities = 20,             // New in Orthanc 1.5.0
     GlobalProperty_Peers = 21,                  // New in Orthanc 1.5.0