In Elasticsearch 6, soft deletes must be enabled manually for each index, and because this setting can't be changed on existing indexes, the defaults that the Result Rankings, Synonyms and Workflow Metrics components are shipped can be a blocker for some deployments requiring them to perform additional steps if they want to use CCR.
(For Company indexes, it is possible to override the default settings through Elasticsearch 6 configuration in the System Settings which will take effect on the next reindex.)
To address this, we want to enable soft deletes by default. It's safe to do so because Elasticsearch 7 has this enabled by default.
This will help new deployments to start with the necessary defaults.
DXP deployments with existing indexes have to backup the data and re-create the indexes by following the steps described here (to be linked).
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