Index Configuration was Unexpectedly Cleared

The index configuration for only one of our indices was unexpectedly cleared, causing all search queries to return empty results.

I reconfigured the index using the Algolia dashboard yesterday, which fixed search in the application, but this morning the configuration was cleared again.

I’m confused as to why the index configuration for only this one index is being cleared, while other index configurations remain untouched.

We are currently running a daily operation that creates a new temporary index, populates it, and uses the moveIndex method to replace our existing indices with the newly created temporary indices. The newly created temporary indices have their settings properly applied, and all of the settings carry over after the moveIndex operation except for one.

Anyone have any insight into how/why this happened? There’s nothing in the codebase that could unset the index configuration.

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