+my $curr_value = {};
+foreach my $field ( qw(snmp_version snmp_community snmp_timeout) ) {
+ $curr_value->{$field} = ($opt{'part_export'} && $opt{'part_export'}->exportnum)
+ ? $part_export->option($field)
+ : $opt{'export_info'}->{'options'}->{$field}->{'default'};
+}
+