App variables that come with canvas seem to be missing

I took over a project from someone. After making some big edits I got to editing the header based on what role was logged in. Then I realized there was no drop down option to change which header I was editing in the admin console. I looked at the data base and saw all of the canvas app variables are missing. This seems off though because the functionality for things like the header changing for an admin vs not admin is working.

Where are those variables and how do I get them back?

Hello @benjmain.hansen117 welcome to the forum!

One easy way would be to create a new app with a free Canvas template and look up / replicate the missing dB entries of your existing app.