# Circuit List Editor Known Limitations

- All currently supported Circuit and CircuitDeviceRow editor writes use
  persistent project commands and project-wide toolbar undo/redo, including
  moves, atomic multi-section reorders and explicit renumbering. Undo/redo
  eligibility is restored from server history after a page reload.
- The project page exposes the paginated revision timeline; the circuit editor
  itself currently exposes only the next eligible Undo/Redo actions.
- Named and automatic logical project snapshots can be listed and restored
  through the project page with persistent Undo/Redo. Automatic snapshots are
  created every 25 revisions and only their newest 12 entries are retained.
- The Revit/CSV foundation and confirmed initial import are implemented.
  Existing-row assignment, move and detach plus creation of an external-only
  row in an existing or newly created circuit have atomic persistent commands.
  Their API planning and editor UI, follow-up import, conflict review and return
  export are pending.
- 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.
- Complete-circuit drag supports one circuit at a time between groups of the
  same category. Cross-category moves and multi-circuit moves across group
  boundaries are intentionally rejected; multi-circuit reorder inside one
  group remains supported.
- Protection and cable values are planner-owned manual selections. The later
  sizing/warning engine does not yet validate them against load, length or
  voltage-drop rules.