diff --git a/etc/zebradb/biblios/etc/dom-config.xml b/etc/zebradb/biblios/etc/dom-config.xml
index e6eb89fdf2..47ae7289e0 100644
--- a/etc/zebradb/biblios/etc/dom-config.xml
+++ b/etc/zebradb/biblios/etc/dom-config.xml
@@ -28,6 +28,7 @@ Bibliographic DOM config for MARC XML input
 -->
 <dom>
   <extract name="index">
+    <xslt stylesheet="preprocess_marcxml.xsl"/>
     <xslt stylesheet="biblio-zebra-indexdefs.xsl"/>
   </extract>
   <retrieve name="marc">
diff --git a/etc/zebradb/marc_defs/marc21/biblios/preprocess_marcxml.xsl b/etc/zebradb/marc_defs/marc21/biblios/preprocess_marcxml.xsl
new file mode 100644
index 0000000000..8140c0af59
--- /dev/null
+++ b/etc/zebradb/marc_defs/marc21/biblios/preprocess_marcxml.xsl
@@ -0,0 +1,23 @@
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:marc="http://www.loc.gov/MARC21/slim"
+ version="1.0">
+<xsl:output indent="yes"
+      method="xml"
+      version="1.0"
+      encoding="UTF-8"/>
+
+ <xsl:template name="identity" match="node()|@*">
+   <xsl:copy>
+     <xsl:apply-templates select="@*|node()"/>
+   </xsl:copy>
+ </xsl:template>
+
+ <xsl:template match="marc:datafield[@tag=880]">
+    <xsl:element name="datafield" namespace="http://www.loc.gov/MARC21/slim">
+        <xsl:attribute name="tag"><xsl:value-of select="substring(marc:subfield[@code=6],1,3)"/></xsl:attribute>
+        <xsl:attribute name="ind1"><xsl:value-of select="@ind1"/></xsl:attribute>
+        <xsl:attribute name="ind2"><xsl:value-of select="@ind2"/></xsl:attribute>
+        <xsl:apply-templates select="marc:subfield[@code != '6']"/>
+    </xsl:element>
+</xsl:template>
+
+</xsl:stylesheet>
diff --git a/etc/zebradb/marc_defs/normarc/biblios/preprocess_marcxml.xsl b/etc/zebradb/marc_defs/normarc/biblios/preprocess_marcxml.xsl
new file mode 100644
index 0000000000..8140c0af59
--- /dev/null
+++ b/etc/zebradb/marc_defs/normarc/biblios/preprocess_marcxml.xsl
@@ -0,0 +1,23 @@
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:marc="http://www.loc.gov/MARC21/slim"
+ version="1.0">
+<xsl:output indent="yes"
+      method="xml"
+      version="1.0"
+      encoding="UTF-8"/>
+
+ <xsl:template name="identity" match="node()|@*">
+   <xsl:copy>
+     <xsl:apply-templates select="@*|node()"/>
+   </xsl:copy>
+ </xsl:template>
+
+ <xsl:template match="marc:datafield[@tag=880]">
+    <xsl:element name="datafield" namespace="http://www.loc.gov/MARC21/slim">
+        <xsl:attribute name="tag"><xsl:value-of select="substring(marc:subfield[@code=6],1,3)"/></xsl:attribute>
+        <xsl:attribute name="ind1"><xsl:value-of select="@ind1"/></xsl:attribute>
+        <xsl:attribute name="ind2"><xsl:value-of select="@ind2"/></xsl:attribute>
+        <xsl:apply-templates select="marc:subfield[@code != '6']"/>
+    </xsl:element>
+</xsl:template>
+
+</xsl:stylesheet>
diff --git a/etc/zebradb/marc_defs/unimarc/biblios/preprocess_marcxml.xsl b/etc/zebradb/marc_defs/unimarc/biblios/preprocess_marcxml.xsl
new file mode 100644
index 0000000000..f2f8134767
--- /dev/null
+++ b/etc/zebradb/marc_defs/unimarc/biblios/preprocess_marcxml.xsl
@@ -0,0 +1,16 @@
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:marc="http://www.loc.gov/MARC21/slim"
+ version="1.0">
+<xsl:output indent="yes"
+      method="xml"
+      version="1.0"
+      encoding="UTF-8"/>
+
+ <xsl:template name="identity" match="node()|@*">
+   <xsl:copy>
+     <xsl:apply-templates select="@*|node()"/>
+   </xsl:copy>
+ </xsl:template>
+
+<!-- There's nothing to do here for UNIMARC but we need this file since the dom-config.xml file is cross-format -->
+
+</xsl:stylesheet>