both posts and comments. Basically everything before a random unknown date I logged in one day to find EVERYTHING gone?? This has been an issue for several months now. Please fix it
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incorrect "marked as duplicate"
Based on your sparse description, it's the exact same issue. However, if you don't want to explain why your ticket is a different problem, I'm afraid I can't help you.

In my case, the posts did exist. They were even approved and were up on the feedback site for several months before suddenly all being purged at once and no longer existing
Thank you for your report!
We're tracking this issue in WEB-1087, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
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