Missing info: editing builder-created screens locally

I've created an app using Shoutem Builder, but the builder isn't allowing me to use iframes, so I've created a local copy with shoutem clone so I can edit the screens which require iframes myself.

Here's the issue: the documentation has information on editing a screen created using the CLI, but I'm unable to find anything related to how to locate and edit individual screens that were created in the builder.

Would these screens need to be deleted using the builder and created one-by-one using the CLI in order to be edited locally? The app compiles and runs great in the simulator and includes all of the screens, so the screens must be somewhere in my local copy, but I've searched for them for several hours to no avail.

Start with the existing documentation for editing a CLI-created screen and the local copy produced by shoutem clone; trace how Builder-created screens are represented. Document where individual screens can be located and edited locally, or state whether they must be recreated via the CLI, then verify the instructions against a compiled simulator app.