Are Data Fix changes safe? Can I undo applied fixes?

The Data Fix engine includes multiple safety mechanisms to protect your data, but you should understand what happens before and after applying fixes.

Safety guarantees

• Safe batch application — Every apply operation modifies all readings together as one unit. If any single correction fails, the entire operation rolls back and zero readings are changed.
• Original value preservation — Every modified reading stores its original value in an audit record. The autofix_actions table logs the original_value, corrected_value, correction method, and timestamp for each change.
• Per-action audit trail — Each individual fix is recorded as a separate action with its type (gap_interpolation, negative_correction, outlier_correction, duplicate_removal, plateau_redistribution), making it possible to trace exactly what changed and why.
• Interpolation metadata — Readings created by gap filling are marked as is_interpolated=true with the interpolation_method recorded, so you can distinguish estimated values from actual meter readings.
• Max 90-day range — Server-side enforcement prevents runaway operations on large datasets.
• No silent errors — If any step fails, the entire apply aborts immediately. The engine stops on first failure instead of logging errors and continuing.

Can you undo fixes?

Currently there is no one-click "undo" button. However:

• The audit trail preserves original values for every changed reading
• An administrator can use the action records to manually restore original values if needed
• Re-importing raw data from your original source (CSV, API) will overwrite corrected values

Best practices

1. Always use Preview before Apply — review the issue count and quality scores
2. Start with shorter time periods (1 week) to verify results before fixing larger ranges
3. Check that the selected period has not been invoiced (a billing warning appears if it has)
4. Export or screenshot your current data before applying fixes to large datasets

Where to see the audit log: After applying, the success message confirms the number of fixes applied. Historical runs are tracked in the autofix history.