Recently moved site to a new server.
Attempting to edit a post created before migration fails. The edit page reloads with the changes removed. Note: 1) this happens for only SOME, but not ALL of entries in the same channel. 2) the entries that fail and those that succeed are set to use the same templates.
Utilities - Logs shows this error message:
Message Craft\HttpException in /home/method/craft/app/controllers/TemplatesController.php:72