+foreach my $override_class ($cgi->param) {
+ next unless $override_class =~ /^tax_override_(\w+)$/;
+ my $class = $1;
+
+ my (@tax_overrides) = (grep "$_", split (",", $1))
+ if $cgi->param($override_class) =~ /^([\d,]+)$/;
+
+ push @process_m2m, {
+ 'link_table' => 'part_pkg_taxoverride',
+ 'target_table' => 'tax_class',
+ 'hashref' => { 'usage_class' => $class },
+ 'params' => [ @tax_overrides ],
+ };
+
+}
+