neogeo
In my opinion, the quickest way at the moment would be to change the tag in the database with a command:
UPDATE `discussion_tag` SET `tag_id` = 'NEW_TAG_ID' WHERE `discussion_tag`.`tag_id` = 'OLD_TAG_ID';
Unfortunately there is one disadvantage of this method, it does not show the information that the discussion tag has been changed from OLD_TAG
to NEW_TAG
.
However, I do not recommend doing so.