There should be a way to unarchive something if that’s the case, which works better than a new post which references the previous one with small addendums or questions. This is especially useful when people are searching for information on certain topics and everything is contained within one post rather than 5 posts because the earlier ones were archived. Many people will never continue searching and see all of the newer information once they have found the old now incomplete posts.

The first issue I noticed with new reddit was the missing sidebar. Is that functionality that I should have easily found or is it still missing after all this time?