Scarey having to deal with all of those numbers! I trust that they are coming from data or an external program and not being generated elsewhere in the script, as they are a debugging unfriendly way to pass information!

I second getting rid of the switch($subkey)

There's no harm in using:

if ( $subkey eq 1 ) {
...
}
elsif ( $subkey eq 11 ) {
...
}
...
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Also, in the 150 block where you have:

elsif($new1 == /1/){
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down to:

elsif($new1 == /9/){
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What are you expecting the string to be and what trying to test? ... a text match anywhere on the string:

elsif($new1 =~ /1/){
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or a test for the actual exact number?

elsif($new1 eq 1){
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or something else? I did this test myself how it would act:

#!/usr/bin/perl -w

use strict;

for my $new1 qw(1 11 a1a 1aa 001 010) {

    print "$new1 == /1/ : ";
    if ( $new1 == /1/ ) {
        print "YES\n";
    }
    else {
        print "NO\n";
    }

    print "-" x 10, $/;

    print "$new1 == 1 : ";
    if ( $new1 == 1 ) {
        print "YES\n";
    }
    else {
        print "NO\n";
    }

    print "-" x 10, $/;

    print "$new1 =~ /1/ : ";
    if ( $new1 =~ /1/ ) {
        print "YES\n";
    }
    else {
        print "NO\n";
    }

    print "-" x 10, $/;

    print "$new1 eq /1/ : ";
    if ( $new1 eq /1/ ) {
        print "YES\n";
    }
    else {
        print "NO\n";
    }

    print "-" x 10, $/;

    print "$new1 eq 1 : ";
    if ( $new1 eq 1 ) {
        print "YES\n";
    }
    else {
        print "NO\n";
    }

    print "=" x 10, $/;

}
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and was quite surprised by the results!

if ( $new1 == /1/ )
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actually fails with:

Use of uninitialized value in pattern match (m//) at ./try.pl line 8.
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if $new1 *is* 1 but on the other hand SUCCEEDS if $new1 is "a1a" !!!