diff --git a/src/jrd/trace/TraceManager.cpp b/src/jrd/trace/TraceManager.cpp
index 347b5465bf..4ada684197 100644
--- a/src/jrd/trace/TraceManager.cpp
+++ b/src/jrd/trace/TraceManager.cpp
@@ -188,6 +188,10 @@ void TraceManager::update_sessions()
 	{	// scope
 		ConfigStorage* storage = getStorage();
 
+		// don't attach going attachment to the new trace sessions, it allows
+		// to avoid problems later - when mapping uses this going attachment
+		const bool noNewSessions = attachment && (attachment->att_purge_tid);
+
 		StorageGuard guard(storage);
 		storage->restart();
 
@@ -199,7 +203,7 @@ void TraceManager::update_sessions()
 				FB_SIZE_T pos;
 				if (trace_sessions.find(session.ses_id, pos))
 					liveSessions.add(session.ses_id);
-				else
+				else if (!noNewSessions)
 				{
 					storage->getSession(session, ConfigStorage::ALL);
 					newSessions.add(FB_NEW_POOL(pool) TraceSession(pool, session));