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If you open the card where the comments are missing, click on 'Show Details' at the top of the Activity section at the bottom, they might still be there.
If they're not there, go to 'Show Menu' on the board, and there will be a complete list of everything that's changed on the whole board, they might still be in there. If you scroll to the bottom of that list and click 'View All Activity' it'll give you the option at the top to just select 'Comments'.
Let us know if that helps :)
Hello Community! My name is Brittany Joiner and I am a Trello enthusiast and Atlassian Community Leader. I'll be sharing with you a series of videos with my top tips on how to best use Trello...
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