I moderate !usmlr@lemmy.world, I just noticed that all the posts older than about 7 months are not visible. Looking at my own post history I can see those older posts, so I know they’re still there. But why aren’t they displayed when viewing the community directly?
It happens to the best, no worries ;) The good thing is, that it is an easy “fix” since you can just crosspost the older stuff to the new community and everything will end up in the same place.