A point about updating the dashboard

I noticed that the menu item in the admin of Wordpress disappeared a while ago, so the dashboard was not showing up. I upgraded and it still didn't show up until I deactivated and reactivated the plugin 3 different times. Is this normal? If the plugin needs to be reactivated every time you do something with it, ie upgrading, I didn't see that in the documentation anywhere. If it is supposed to upgrade and just work, it didn't. Just a point that may help out someone else in the future. Or me for that matter.
Thanks.