initial_balance filter no longer works on V5 for general_ledger reports
can't seem to use [in French] "Balance de départ":!0 as filter any more in either the V5 gtk client nor in sao.
Message displayed in gtk:
"Vous essayez de lire des enregistrements qui n'existent plus"
(Type de document: account.period)
in sao, read_error is displayed
easy to reproduce on http://demo5.0.tryton.org/