Data in XDP Files not being read in Acrobat DC Pro

I have an XDP file that is generated by my website.  The file opens fine in Acrobat XI Pro with all the data populated in the correct form fields.  In Acrobat DC Pro, however, the form displays correctly but the data is not populated.  Is there a setting somewhere that is causing this issue?

The XDP file is XFA formatted as follows:

<?xml version="1.0" encoding="UTF-8"?>
<?xfa generator="XFA2_4" APIVersion="3.6.14118.0"?>
<xdp:xdp xmlns:xdp="http://ns.adobe.com/xdp/" uuid="26a94776-07be-434b-ae26-1d006a5e7bf4">
    <xfa:datasets xmlns:xfa="http://www.xfa.org/schema/xfa-data/1.0/">
        <xfa:data>
            <Form>
                <dataField>data</dataField>
                <moreDataFields>more data</dataField>
                <Etc/>
            </Form>
        </xfa:data>
    </xfa:datasets>
    <pdf xmlns="http://ns.adobe.com/xdp/pdf/">
        <document>
            <chunk>Base64 encoded form data...</chunk>
        </document>
    </pdf>
    <xfdf xmlns="http://ns.adobe.com/xfdf/" xml:space="preserve">
        <annots/>
    </xfdf>
</xdp:xdp>