The best way to check that everything is working after the refactor is via the Mobile app, in the Moodle site: Create a forum post with attachments Create a glossary entry with attachments Create an assignment including attachments in the description (attached files, not in the description editor) Connect with the app to the site and check that you can see the glossary, forum and assignment attachments correctly. To check that now you can view the attached files size: As admin, enable "Mobile services": Plugins ► Web Services ► Mobile Create a Token for one user in the course where the forum with attachments is: Click on Site administration ► Plugins ► Web services ► Manage tokens Next, you can do a CURL REST call simulating a WS client with the user. You need to replace the wstoken, discussionid (the discussion id of the post with attachments) and the URL of your moodle instance curl 'http://localhost/m/stable_master/webservice/rest/server.php?moodlewsrestformat=json' --data 'discussionid=X&wsfunction=mod_forum_get_forum_discussion_posts&wstoken=ffbe3a3002f235bf9d01fd9369e10b66&moodlewssettingfilter=true'| python -m "json.tool" Now check that you can see the attachments including the file size