Wrong unit test in ubl-inv-contact-tests.xml

In ubl-inv-contact-tests.xml is a wrong unit test in line 14. It tests for BR-DE-2, which tests BG-6, but this tests removes parts of BG-4.

 <cac:AccountingSupplierParty>
    <?xmute mutator="remove" schematron-invalid="xrinv:BR-DE-2" id="party-rm-r2"
            description="A party element with conatct must exist" ?>
    <cac:Party>
      <cac:PartyName>