Post Author & Date Changer - Product specifications

Change who wrote a post and when it was posted, from the post's own "•••" menu. Thread starters, post
order, last-post info, message counts and reactions are all kept in sync.

**Changing a post**
- "Change author / date" in every post's "•••" menu, opening an overlay form.
- Author field with member suggestions as you type; optional guest name for non-members.
- Date and time field in your own time zone, to the second.

**Kept in sync**
- First post: thread starter and start date (optional).
- Post order within the thread, rebuilt from the dates.
- Thread and forum "last post" (date, poster, thread).
- Message counts, old author −1 and new author +1 (optional; follows the forum's "count messages" setting).
- Reaction score earned by the post moves to the new author (optional).
- "You've posted here" thread markers.
- Search index updated; moderator log entry with the old and new values.

**Safety**
- No future dates; a reply can't predate the first post, and the first post can't postdate a reply.
- Separate permissions for author and date, per forum; on install, given to everyone who can edit any post.
- No alerts, edit history or "last edited" notes are triggered.

**Requirements:** XenForo 2.3+, PHP 7.4+.