Handle edge cases in filtering

**Feature request**
It would be great to have export for data.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_export` with default `false`.

The issue names no files, tests, export format, or entry point. Start by locating configuration handling and the data flow that would own export behavior; done should include an `enable_export` option defaulting to `false` and a clearly defined export path for the requested data.

Written by the indexing model from the issue text.