+ } elsif ($form->{script} eq 'ir.pl') {
+ # when a purchase invoice is opened from the report of purchase invoices
+ # $form->{type} isn't set, but $form->{script} is, not sure why this is or
+ # whether this distinction matters in some other scenario. Otherwise one
+ # could probably take out this elsif and add a
+ # " or $form->{script} eq 'ir.pl' "
+ # to the above if-statement
+ if (!$form->{deliverydate}) {
+ $transdate = $form->{invdate};
+ } else {
+ $transdate = $form->{deliverydate};
+ }
+ } elsif (($form->{type} eq "credit_note") and $form->{deliverydate}) {
+ # if credit_note has a deliverydate, use this instead of invdate
+ # useful for credit_notes of invoices from an old period with different tax
+ # if there is no deliverydate then invdate is used, old default (see next elsif)
+ # Falls hier der Stichtag für Steuern anders bestimmt wird,
+ # entsprechend auch bei Taxkeys.pm anpassen
+ $transdate = $form->{deliverydate};