# UPGRADE_NOTES — fusion_accounting_core

## V19.0.1.0.0 (initial — Phase 0)

### Reference sources
- `RePackaged-Odoo/accounting/account_accountant/models/account_move.py` (Enterprise extension fields read for schema match)
- `RePackaged-Odoo/accounting/account_accountant/models/account_reconcile_model.py` (same)

### Mirror-zone files (none in _core — _core has no Mirror zone)

### Abstract-zone files (all of _core is abstract)
- `models/account_move.py`
- `models/account_reconcile_model.py`
- `models/ir_module_module.py`

### Intentional deltas from Odoo
- Shared-field declarations have NO compute methods, NO @api decorators beyond
  basic field types. Enterprise's account_move.py adds compute methods and
  business logic; we deliberately do not duplicate them. When Enterprise is
  installed, its compute methods run; when it's not, the fields are simply
  unused (until a fusion sub-module decides to own that behavior).

### Migrations
- `migrations/19.0.1.0.0/pre-migration.py` — rehome fusion security xml-ids
  from module='fusion_accounting' to module='fusion_accounting_core' BEFORE
  data-load (avoids unique-constraint crash on upgrade from pre-Phase-0)
- `migrations/19.0.1.0.0/post-migration.py` — idempotent safety-net for the
  same rehome (zero-op if pre-migration already ran)