The full metadata for my file is as follows:
<xmp:ModifyDate>2013-02-06T20:58:34-08:00</xmp:ModifyDate>
<xmp:CreateDate>2013-02-07T06:57:46+02:00</xmp:CreateDate>
<xmp:MetadataDate>2013-02-06T20:58:34-08:00</xmp:MetadataDate>
Why is the CreateDate more recent than the ModifyDate?