MARC::File::XML odd conversion to usmarc

xml record : http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.loc.gov/MARC21/slim http://www.loc.gov/ standards/marcxml/schema/MARC21slim.xsd" xmlns="http://www.loc.gov/MARC21/slim";> 00154nx a2200073 4500 Cohen Bernard 1956- Traducteur 199802

MARC::File::XML and parsing.

hi, I have some problems with Marc::File::XML parser. Take those two xml records. Despite the fact that I agree that there are odd characters in some subfields. I am wondering why, since those characters are UTF8, MARC::File::XML should drop them when parsing. Is there a reason why MARC::File::XML