hgext/narrow/narrowcommands.py

--- a/hgext/narrow/narrowcommands.py	Sun Aug 26 20:20:34 2018 +0300
+++ b/hgext/narrow/narrowcommands.py	Mon Aug 27 14:02:48 2018 +0300
@@ -307,6 +307,7 @@
         with ds.parentchange():
             ds.setparents(p1, p2)
 
+        repo.setnewnarrowpats()
         actions = {k: [] for k in 'a am f g cd dc r dm dg m e k p pr'.split()}
         addgaction = actions['g'].append