# Circuit List Editor Known Limitations - Existing Circuit and CircuitDeviceRow cell edits plus standalone insert/delete actions and CircuitDeviceRow moves use persistent project commands and project-wide toolbar undo/redo. The editor's visible stack is still session-local, is empty after reload and still contains the direct renumber operation during the cutover. Circuit reorder is already persistent, including atomic multi-section sorted-order application. - Server-side project revisions and persistent undo/redo eligibility exist for the command types documented in `circuit-list-editor-api.md`; complete editor command coverage and history reconstruction are not complete. - Named logical project snapshots and restore are not implemented yet. - No Revit/CSV/IFCGUID import and export workflow is implemented yet. - Persistence currently targets local SQLite; PostgreSQL is an architectural option, not an implemented runtime. - The global device library supports basic CRUD and copy operations, but has no versioning, permissions or controlled synchronization model. - Final electrical sizing logic is not implemented yet. - No full norm-compliant voltage-drop and protection-dimensioning calculation flow yet. - Sorting is view-only until users explicitly apply sorted order. - Cross-section circuit drag-reorder is intentionally blocked. - Legacy consumer UI and server endpoints are removed; retained source rows and migration mappings remain available only for upgrade traceability.