Index: trunk/data/validator/ignoretags.cfg
===================================================================
--- trunk/data/validator/ignoretags.cfg	(revision 14683)
+++ trunk/data/validator/ignoretags.cfg	(revision 14696)
@@ -124,4 +124,7 @@
 E:width
 E:length
+E:layer
+E:end_date
+E:start_date
 ;
 ; Ignore valid and semi-valid keys that end with...