Cannot figure out how to use environments after importing from Insomnia

I imported a JSON export from Insomnia, and while everything appears to be correct to me, I’m thinking something went wrong with the environments import. I can’t figure out how to actually switch between environments. Clicking on Environment brings up a box with my environments in them, and I can see the values and names of environments, but no matter what I do I can’t select one. I also don’t see the options I see in the docs for environments. The only options I have when right clicking on an environment is Duplicate, Make Sharable, or Delete. Nothing about Change Color or Rename, which I see in the screenshots from the Docs.

When I try to send a request I get the error (replacing the ID with abc123), but I don’t know how to delete duplicates, there doesn’t seem to be any duplicates to me.
Multiple base environments for abc123. Delete duplicates before continuing.

I’m guessing something went wrong with the import, but I can’t figure out what to do to fix it.