Those are rather complex and long, which means they inevitably must be updated after some time.
However, Discourse comes with a time limit of three months (I guess) by default, after which the post or comment is locked and can no longer be edited.
If you’re reluctant to relax the time limit, then may I suggest that we try the relaxed setting for a limited time as an experiment. In case that during that experiment, you find that the relaxed setting makes your work more difficult or causes the moderator team any inconvenience, I wouldn’t mind that the limit be set back to the stricter default.
I’ve been bitten by this issue several times in the past (example 1, 2), so I figure that relaxing the time limit might be a net benefit for everyone.
So I guess it’s time to grind so I can re-earn that Regular status so I can do the conversion. Been Regular several times but keep losing it again due to intermittent inactivity. Welp.
As a general comment, I think it is reasonable policy to disallow editing of old posts, even though there are arguments to allow it. I don’t have a strong opinion either way and it is definitely not something that I myself can change.
I would actually suggest that for information that will be maintained over long periods of time, it should be in the Community Wiki, rather than in this forum. That has no restrictions as far as time-frame goes - and it is a cleaner place to locate information that has long-term and ongoing relevance.
Maybe it would help if a moderator could relax the forum restriction for a specific post but I don’t know whether that is possible.
Be prepared for a multi-step process getting an account and permisions with no clear guidance on how many steps there are or who to direct each “Mother, may I?” to.
As far as I know, a forum account is not needed, but it might help.
I didn’t know “Regular” staus required maintainance, but I guess that is implied by the name.