Sync PageBuilder Layout Changes to portal pages

Some times changes to layout templates made in WebDAV may not affective immediately (even if you restart the server). 

Login portal admin console --> Manage Pages --> Click on the Refresh Icon

Sometimes even the above one does not help , then apply the following i.e. Login portal admin console --> Manage Pages --> Page properties --> expand “Type of Page” --> select check box for the “Synchronize layout model with this layout template”