Back in the 4.x days and earlier, whenever creating or updating a new entry, MT would also rebuild any adjacent individual entry archives, so that and links would be updated accordingly. Now, in 5.12, whenever I create a new entry on one of my blogs, the previous one doesn't get rebuilt, and as a result I have to manually rebuild it as well in order to get the next entry item.
The adjacent daily archive pages are getting rebuilt, at least, but the individual ones are not.
The strange thing is this is only affecting one of my sites; on another site (which is being served from the same MT dashboard) the adjacent individual archives ARE being rebuilt whenever an entry is added or rebuilt.
I can't figure out what would be causing this difference; I thought it might be because in the misbehaving site the EntryPrevious/EntryNext tags were being brought in as a template module instead of being directly in the template, but even putting them in directly didn't help.
Has anyone run into this issue, and are there any fixes? I couldn't find any settings for whether to rebuild adjacent archives, either on blogs or templates, and it's getting pretty frustrating.
Reported on Movable Type 5

You may like to file that as bug report at:
https://movabletype.fogbugz.com/
Before doing that you may like to try it also from the demo website that I've made available at:
http://www.movabletypedemo.org/
Do it from a brand new blog, without any changes to the templates, just to make sure it is something related to the cms, not to changes in the templates.
Kind Regards,
Mihai Bocsaru
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Well, I also have another MT blog that is using just the default templates, but that isn't exhibiting the problem. But I can't tell what it would be from the templates.
On the site in question, there are a lot of archive mappings which are a bit unconventional, so I wonder if it's just a weird edge condition in how MT decides to rebuild.
I guess I'll submit a bug report. I was just hoping this was something that was a purposeful change that someone knew a workaround to already.