[WIP] Migration / _reindex

[felipeelia]

Description of the Change

Closes #

Alternate Designs

Possible Drawbacks

Verification Process

Checklist:

• [ ] I have read the CONTRIBUTING document.
• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my change.
• [ ] All new and existing tests passed.

Changelog Entry

Credits

Props @