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After you've set whatever you wanted in the custom fields added to your profile using the Profile Extender plugin, if you go back to the profile edit page, the fileds are blank again. There previous value isn't retrieved.
This can be quite annoying for users, and also for admins who need to change something on a user's profile from the dashboard; the edit menu appears with the fields blank, so you have to actually open the user's profile in a new tab and copy the existing info back into the fields.
Fill out these custom fields and save... go back to Profile, they appear as expected... go back to Edit Profile, the three fields are blank again just like in the picture
In the dashboard: edit a user... the three fields are blank, even if the user has entered something on their profile