Also, all posts made during the transition period were subsequently deleted when LI rolled it back. I even see my posts in this group from yesterday are gone.

Ingred Lunden at Tech Cruch covers LinkedIn. Here's one of her articles:
►techcrunch.com/2018/08/15/linkedin-groups-relaunch
I sent her a private message about what's going on hoping there might be a scoop for her and Tech Crunch in all of this.
She's a LinkedIn Premium account holder, but I was able to send her my message for free:
►linkedin.com/in/ingridlunden

There is an established software commandment that the software team that created the problem absolutely cannot be the team used to solve the problem.

If LI rolled out a new build so buggy it was quickly pulled, then LI needs to look at their development process. Something internal is broken.

My comment posted on TechCrunch article cited above:

"Thank you for a completely disappointing puff piece that puts you in the ranks of LinkedIn apologists. The “new” revamp of LI Groups is haphazard and being made without an iota of concern for or understanding of the core function of groups — which is to contain profession- and industry-centric discussions, sharing of expertise, and networking.

For example, you virtually drool over threaded comments. But you overlook the fact that LI’s pesky, constantly self-re-asserting default sort for comments (“top comments”) completely scrambles threaded comments in such a way as to make it impossible to see many of them, let alone follow the thread.

Additionally, you ga-ga attitude about the addition of “rich media” candy itself displays a lack of understanding of the core-functions of profession- and industry-centric Groups — which are not primarily vehicles for advertising and promotion or, worse, continual, uncontrollable spamming. IMO."

David Thanks for the link to the TechCrunch article. It was interesting to read about some of the features that are being incorporated in the release that had not been made evident in discussions here in LIGOMM.

FYI:
Mitali Pattnaik (Director of Groups Product):
"Super excited to share with you that new LinkedIn Groups begins rolling out today! Rebuilding Groups has been a massive effort and I am so proud of our team. We are just getting started — stay tuned for more updates in coming months! "
https://www.linkedin.com/feed/update/urn:li:activity:6442858031201030144

FYI:
Greg Cooper (LI Expert) [1]:
NEW GROUPS HAVE ARRIVED 👍 OR 👎
I just logged on this morning to find the new group experience is here. I am not sure
https://www.linkedin.com/feed/update/urn:li:activity:6443031640779296768/

FYI:
Greg Cooper (LI Expert) [2]:
"A QUICK AND DIRTY LOOK AT LINKEDIN NEW GROUPS FOR MEMBERS
Here is a quick look at the new LinkedIn groups which arrived on my desk today. Please excuse the lack of bells and whistles I am supposed to be working on something else that is urgent but thought folks might appreciate a quick peek at the basic look and feel."
https://www.linkedin.com/feed/update/urn:li:activity:6443111096663494656/

One gets a different feel for the reaction to New Groups when reading Mitali Pattnaik's feed than the tenor in this group. Thanks for the link, Samantha

Well, I have to say I am disappointed for all the wrong reasons. I totally missed the train wreck you are all talking about. I have seen no changes to the groups and I was really looking forward to a big pile up. Oh well, no problem. I am sure Linkedin will give the wreck another go and hopefully I will not miss it this time.

Peter: What feed are you looking at? When I look at the comments on linkedin.com/in/mitalip/detail/recent-activity I see
"Mitali, where can we find your product roadmap?"
"... no-one has actually been able (willing) to tell us what's happening in even the first iteration. All we've getting is news about what's being taken away ... and it's a lot!"
"This latest iteration ... does even more damage by eliminating many of the tools formerly available ... "
"...why was the announcement feature taken away? We saw engagement in our groups plummet to nothing this week without the announcement."
The rest is all congratulatory fluff without a single reference to anything anyone thinks is actually *better* about this new version.