Can I update ES mappings to exclude copy_to?


What are ES back-compat rules around directives? Say, I have a copy_to mapping on several fields with data already indexed and wanted to remove the "copy_to" directive on some of those.

Is this allowed? Or is it an unsupported operation like removing a field?

I assume the answer must be yes, but I couldn't find any confirmation online. And I'd like a stronger confirmation than the test I wrote :smiley:

My read here is that this is allowed, but would appreciate the input of someone that is more deeply familiar with ES.

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