Mobile Property: how to get config JSON

We have multiple mobile properties which were created at different times. Between the first property we create and the others something changed within Launch and now we struggle to get the configuration JSON.

On the environment screen you can copy the id or code snippets. The environment file id was something like this:

launch-HASH-ENV and you could easily get the JSON with: http://assets.adobedtm.com/launch-HASH-ENV.json

The environment file id of newer mobile properties look like this:

COMPANYID/PROPERTYID/launch-ENVIRONMENTID-ENV but using this pattern with assets.adobedtm.com does no longer work and we get:

"File not found."

It seems even the API call itself does not work anymore:

MobileCore.configureWithAppID(ENVIRONMENT_FILE_ID)

Is this a bug or how are we able to load the configurations now?