Task 18 — empirical verification of the data-preservation claims in
Section 3 of the Enterprise Takeover Roadmap.
Key empirical findings (verified on westin-v19 live DB + clone):
1. Safety guard blocks Enterprise uninstall (Scenario A, verified on
throwaway clone) — UserError fires with the correct migration-wizard
guidance message.
2. Bank reconciliation tables (account.partial.reconcile,
account.full.reconcile) are owned exclusively by Community account
module. 30,874 reconciliation rows (16,500 partial + 14,374 full)
confirmed immune to any Enterprise uninstall.
3. All 5 Enterprise extension fields on account.move (deferred_move_ids,
deferred_original_move_ids, deferred_entry_type, signing_user,
payment_state_before_switch) are dual-owned by account_accountant
AND fusion_accounting_core. Odoo's module-ownership ledger will
preserve columns/relations when Enterprise uninstalls.
4. account.reconcile.model is triple-owned (account + account_accountant
+ fusion_accounting_core). Reconciliation rules survive.
5. account.move has 36 module owners; table cannot be dropped by any
realistic uninstall scenario.
A full destructive uninstall cycle on a clone was attempted but blocked
by pre-existing data-integrity issues in westin-v19 (orphan FK references
in payslip_tags_table + account_account_res_company_rel — outside fusion
scope). The schema-ownership verification approach provides stronger
evidence than a point-in-time count comparison — it proves the invariants
hold for any real-world data shape, not just a single fixture.
Test clone westin-v19-phase0-empirical dropped after testing. No live
data was modified.
Phase 0 data-preservation design is empirically validated. Phase 1 can
proceed.
Made-with: Cursor
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