Altering a "New Element" in a custom item type

I created a "new element" in a custom item type. I had originally set it to an "integer", but would now like to change this to "tiny text". I do not see a way to edit the type of data it collects. I also do not see a way to remove the incorrect item type and replace it with a new one. If I try and create new version, I get an error message that this item type already exists.

Unfortunately, you can't currently edit an item type element through the Omeka admin interface.

The Omeka documentation on managing item types does contain instructions for manually editing an element.

Thanks, I managed to make the edits in MySQL using phpMyAdmin.