In the old template editor you could locate all the templates you'd edited by searching '*' as this was added to the beginning of the template name when edited.
In the new template editor though it is added to the end and is no longer searchable.
It would be useful if there was an easy way to access all edited templates either through the search or another method .
Official response
Thanks for the suggestion, Samuel. This functionality has been added to the new Template Editor. Your edited Help Center templates will now be indicated with an asterisk (*) on the Template Editor menu to make it clearer and easier to locate which templates have been edited.