I'm having a client who can create their own doctypes, based on a standard-doctype we created for them. The standard-doctype contains some predefined properties, but the client has the option to add some more properties. In their old solution, the new properties is placed last but in their new solution, the new properties have sortorder from 0 and up We haven't dont anything specific in their old solution to handle it, so it's default Umbraco behaviour. Is there a way to control this ?