Comment 5 for bug 1160365

Note: copying invoicing/accounting data from parent "commercial party" to descendants cannot be done for one2many relationships. Currently the only case we identified is the list of bank accounts. Those will not be duplicated and should only ever be used in the context of the parent - similarly to the way payable/receivable entries are all linked to the parent directly. We'll double-check that it is the case everywhere. We should probably raise an exception if a module tries to add a one2many field to the list of accounting-related fields to sync between parent and contacts.