my %subs = ( path => [ @{$session{hierarchy_path}} ] );
$subs{bottom_path_term} = ${pop(@{$subs{path}})}{term};
if (@{$subs{path}}) { delete $subs{path}[$#{$subs{path}}]{id}; }
else { delete $subs{path}; }

##</code><code>##

Before:
 'hierarchy_path' => [
                                {
                                  'id' => 0,
                                  'term' => 'Top of Hierarchy'
                                },
                                {
                                  'id' => '57000',
                                  'term' => 'Education'
                                }
                              ],


After:
 'hierarchy_path' => [
                                {
                                  'term' => 'Top of Hierarchy'
                                },
                                {
                                  'id' => '57000',
                                  'term' => 'Education'
                                }
                              ],