The group Hobo-1 [H1] seems to have vanished from mangaupdates and so has all of their release history for the series they had worked on such as:
https://www.mangaupdates.com/series.html?id=14286
https://www.mangaupdates.com/series.html?id=39208
https://www.mangaupdates.com/series.html?id=14443
https://www.mangaupdates.com/series.html?id=47705

There are many other series/oneshots affected by the removal of the group from the site too (I just listed a few of them). I'm not sure why the group has disappeared from the site but couldn't their release history remain? Some series like Tomehane now look like no one has scanlated any chapters from it, and others look like many chapters were never released.

My suggestion: If the group/admin want to remove the group from the database for whatever reason, could there be some kind of mention on the affected series/oneshot pages to reflect that they have had chapters released?

This is exactly the reason why I'm poking localhost! NO MOAR!

@suggestion: How is that better than not removing them? I lul at messages such as "Hobo-1's releases of Tomohane from vol 1 to vol 9 ch 4 has been removed from the mang-updates because they asked for it."

Yeah, optimally, not removing the group would be the best solution/suggestion. I just figured I could toss in some kind of middle ground if they had no choice. I hope some admin can look into this situation and change it so that the release history is back..

We are not adding them back

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A just ruler amongst tyrants