Recently we have upgraded our servers from 6.2 to AEM 6.4.4 and we observed that many groups created till 6.2 was removed from the servers.
Is it caused by 6.4 upgrade?
Is it known issue?
Is there any fix for this to recover deleted groups?
Thanks in Advance.
I have checked all steps you have mentioned, except last 2.
This was an upgrade from 6.2 CFP-14 to AEM 6.4.4 directly and the groups which are missing are custom groups which we have created along the road. [Missing few not all]
Upgrade log was clean and successful.
I have read few more people complaining about the same issue.