http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=9859 --- Comment #5 from mathieu saby <mathieu.saby@univ-rennes2.fr> --- My own test to proove the problem with  1 creating a record with 200$aMoyen Âge and 200$f = Pierre Reverdy 2 exporting with tools/export.pl --format=marc --record-type=bibs --filename=koha.mrc 3 exporting with tools/export.pl --format=marc --record-type=bibs --clean --filename=koha2.mrc 4 searching the record in koha1.mrc with yaz-marcdump koha1.mrc | grep Reverdy 200 1 $a Moyen ge $b Texte imprimé $e notes 1930-1936 $f Pierre Reverdy 700 1 $3 027096327 $a Reverdy $b Pierre $f 1889-1960 $4 070 $9 21567 5 searching the record in koha2.mrc with yaz-marcdump koha1.mrc | grep Reverdy 200 1 $a Moyen Âge $b Texte imprimé $e notes 1930-1936 $f Pierre Reverdy 700 1 $3 027096327 $a Reverdy $b Pierre $f 1889-1960 $4 070 $9 21567 In 1st file, the  is removed, because --clean option force the script to call RemoveAllNsb, which call nsb_clean. M. Saby -- You are receiving this mail because: You are watching all bug changes.