here label for testing Fig. 1.

first

Fig. 2.

second

Fig. 3.

third

Fig. 4.

fourth

Fig. 5.

fifth

Fig. 6.

sixth

##

use strict;
use XML::Twig;

my $twig = new XML::Twig(					
										
);

$twig->parsefile('1.xml');

my $count = $twig->get_xpath('//fig//label'); 

for my $c (0..($count-1))
{

	my $t = $twig->get_xpath('//fig//label', $c);			#//fig/label -here problem comes			
													
	my $pl = $twig->get_xpath('//fig//caption', $c);
	
	#my $cc = $t->print;# print for testing
	
	#my $aa = $twig->print; #print for testing
	
	#print "$cc\n\n$c\n**$aa\n";														
								
	my $cut = $t->cut ; 
							
	$cut->paste('first_child', $pl) ;												

}

$twig->print;

##

##

Correct Output: XPath Expression - "//fig//label"
---------------


here label for testing
Fig. 1.first
Fig. 2.second
Fig. 3.third
Fig. 4.fourth
Fig. 5.fifth
Fig. 6.sixth


##

##

Wrong output:  XPath Expression - "//fig/label"
-------------

here label for testing
Fig. 1.first
Fig. 2.Fig. 3.second
third
Fig. 4.fourth
Fig. 5.fifth
Fig. 6.sixth