Moderator told me this and then i logged into her account from the admin panel and confirmed it.

""I miss my power to edit threads? I can just edit my own posts. I also cant see my menu, I only see Moderation history. "

Why is this?

???

After an upgrade 4.0.x -> 4.1.x  need to edit templates of your theme.

Here you can see the difference on your old and new version

https://community.invisionpower.com/index.php?app=core&module=system&controller=plugins&do=diff