Google Cloud Platform emailed me, telling me to migrate from the Master/Slave Datastore to the High Replication Datastore (HRD).
Unfortunately, the migration instructions have fallen out of date. The Duplicate Application Settings feature is missing.
It seems that the "Administration Console" has been renamed the "Developers Console". Application Settings was put under "Compute / App Engine / Settings". There are a few other things to edit (cookie, auth, logs), but no Duplicate option. Is there still a way to access the feature?
If not, the instructions also say:
You could manually accomplish the same thing using other capabilities of the Administration Console if you wish,
What would that entail?