diff --git a/sp/src/responserules/runtime/response_system.cpp b/sp/src/responserules/runtime/response_system.cpp
index 7867bda0..968f856d 100644
--- a/sp/src/responserules/runtime/response_system.cpp
+++ b/sp/src/responserules/runtime/response_system.cpp
@@ -246,7 +246,12 @@ void CResponseSystem::Clear()
 {
 	m_Responses.RemoveAll();
 	m_Criteria.RemoveAll();
+#ifdef MAPBASE
+	// Must purge to avoid issues with reloading the system
+	m_RulePartitions.PurgeAndDeleteElements();
+#else
 	m_RulePartitions.RemoveAll();
+#endif
 	m_Enumerations.RemoveAll();
 }
 
diff --git a/sp/src/responserules/runtime/response_types_internal.cpp b/sp/src/responserules/runtime/response_types_internal.cpp
index 72e7eca5..fe6d7fd0 100644
--- a/sp/src/responserules/runtime/response_types_internal.cpp
+++ b/sp/src/responserules/runtime/response_types_internal.cpp
@@ -88,6 +88,20 @@ void ResponseRulePartition::RemoveAll( void )
 	}
 }
 
+#ifdef MAPBASE
+void ResponseRulePartition::PurgeAndDeleteElements()
+{
+	for ( int bukkit = 0 ; bukkit < N_RESPONSE_PARTITIONS ; ++bukkit )
+	{
+		for ( int i = m_RuleParts[bukkit].FirstInorder(); i != m_RuleParts[bukkit].InvalidIndex(); i = m_RuleParts[bukkit].NextInorder( i ) )
+		{
+			delete m_RuleParts[bukkit][ i ];
+		}
+		m_RuleParts[bukkit].Purge();
+	}
+}
+#endif
+
 // don't bucket "subject" criteria that prefix with operators, since stripping all that out again would
 // be a big pain, and the most important rules that need subjects are tlk_remarks anyway. 
 static inline bool CanBucketBySubject( const char * RESTRICT pszSubject )
diff --git a/sp/src/responserules/runtime/response_types_internal.h b/sp/src/responserules/runtime/response_types_internal.h
index 20cc9d54..25b6f2d1 100644
--- a/sp/src/responserules/runtime/response_types_internal.h
+++ b/sp/src/responserules/runtime/response_types_internal.h
@@ -433,6 +433,9 @@ namespace ResponseRules
 
 		// dump everything.
 		void RemoveAll();
+#ifdef MAPBASE
+		void PurgeAndDeleteElements();
+#endif
 
 		inline Rule &operator[]( tIndex idx );
 		int Count( void ); // number of elements inside, but you can't iterate from 0 to this