Very often, yes. Well i have to mention that the splitting is used fot a particular section name (split.pl -c SectionName foo.xml). Becuase my twig is v.3.14 i changed the inherited_att to inherit_att (line 102 in split.pl) to conform with the XML::Twing::Elt. Worked fine in small xmls. In a big one had the prob. i took a different section (to reduce the splitted xmls) and then split again in th foo-01 to do foo-01-00 and so on. Merged the foo-01-00 but again had the same lines (fewer this time). Also merge does not reqs the -o flag so, i put the > result.xml. thnks