[member="Benedali Serrus"]
More than likely, they would be requested by the writers for said individual characters - ones they don't want to write with, but don't want to delete. Staff putting "inactive" tags on accounts without them asking would only make sense if someone hadn't shown up for around two to three months. They likely would only replace one tag, since according to staff, an account or subaccount may only have up to two tags, but that of course isn't an issue, since when someone were to come back, they could easily ask for the "inactive" tag to be replaced with something else.