[trunk 6.1] Record rule for unlink fails with inherits (hr.analytic.timesheet)

OpenERP doesn't evaluate properly the record rule in the case of unlink operation on objects with inherits.
Example : hr.analytic.timesheet
Record rule is evaluated on inherited object. Objects are deleted. Record rule is tested on object. FAILED
Ojects should be deleted after the record rule is tested on inherited object and on the object itself.

[2012-01-30 09:00:06,864][?] DEBUG_SQL:db.cursor:query: SELECT account_analytic_line.id FROM "account_analytic_line" WHERE account_analytic_line.id IN (33) and (account_analytic_line."company_id" IS NULL OR (account_analytic_line."company_id" in (1)))
[2012-01-30 09:00:18,619][?] DEBUG_SQL:db.cursor:query: delete from account_analytic_line where id IN (33)
(...)
[2012-01-30 09:00:18,627][?] DEBUG_SQL:db.cursor:query: SELECT hr_analytic_timesheet.id FROM "hr_analytic_timesheet","account_analytic_line" WHERE hr_analytic_timesheet.id IN (37) and (account_analytic_line."id"=hr_analytic_timesheet."line_id") AND (account_analytic_line."state" != E'approved')