Bug? Links generated for Google Calendar do not show up in list of app integrations

I have added two Google Calendar integrations to two separate projects, but they aren't listed when I go to Settings -> Apps. If I need to get the links again, I have to go back and re-add a Google Calendar integration -- but re-adding gives me a new link, not the first link. I would call this behavior "confusing" from a UX perspective.

This especially seems to be a problem, in that I can't see (and potentially disable) existing links I've generated to the project calendar.