Better to default to using Message-ID for threading.
Hugo <Nabble> wrote
We have code to rethread mailing list archives
If ever that code is required:
* could the re-threading apply to just part of a forum (say, messages during a defined period)
* or would it apply to the forum (list archive) in its entirety?
(I'm happy to move by hand, I usually do, but I'm paying greater than usual attention to this particular forum.)
Thanks
Graham