Thanks for the detective work! I had archive.org & Co. in mind but thought such measures are unnecessary in an OSS community!
Mary, obviously, if she requested, then it is a clear case. But next time, could you please send me a message, if you delete a post of mine. My posts https://moodle.org/mod/forum/user.php?id=41095 make my personal knowledge base!
(Shifting between forums and splitting threads are different. For those I do not need notifications.)