=== modified file 'l10n_it_ri_ba/account_invoice.py'
--- l10n_it_ri_ba/account_invoice.py	2011-11-03 15:14:03 +0000
+++ l10n_it_ri_ba/account_invoice.py	2012-01-13 09:25:41 +0000
@@ -34,7 +34,11 @@
        cr.execute(""" SELECT ai.move_id
           FROM account_invoice ai
           INNER JOIN account_payment_term pt ON (ai.payment_term = pt.id)
-          WHERE pt.riba = 'True'""")
+          WHERE pt.riba = 'True'
+          AND ai.move_id not in 
+          (SELECT distinct am.move_id FROM riba_line rl INNER JOIN 
+          account_move_line am on rl.move_line_id = am.id)
+          """)
        return [x[0] for x in cr.fetchall()]