Generally speaking, when a part of metadata doesn't appear in an imported object, the problem may be in the namespace, so you should check the XML generated by our parsers. In case you are importing an image that you copied in C:\TEMP folder, use the following syntax to generate XML:
parser.exe -in c:\temp\ORI_0.jpg
In versions 2.2, 2.1 and 2.0 prior to build 2606, if the image description was in tag tiff:ImageDescription (possibly because it is an EXIF data), the stylesheet used to convert data (..\config\global\gn4_tark4_common\xsl_importImageFromXmp.xml) was considering only the tag dc:description and not the tag tiff:ImageDescription. Therefore, the summary resulted empty in the imported image.
The mentioned stylesheet has been fixed in versions 2.0, 2.1 and 2.2 to take into consideration also the tiff:ImageDescription - import it in the database, and then reimport the image and the summary will appear.
Additional technicalities
When you open an image with Photoshop you can see on the File > Info > Raw Data that it contains the description in dc:description:
When you process the image with parser.exe you get the description in the tiff:ImageDescription instead.
<tiff:ImageDescription>
<rdf:Alt>
<rdf:li xml:lang="x-default">Nombre: Roberto Hau Choc Ocupación: técnico en electrónica “en Tizimin si hay dengue , toda mi colonia que es la santa rosa de lima está enferma de dengue, ya fui dos ocasiones en el centro de salud a repórtalo y no hacen nada a ellos no les importa, la primera vez dijeron que si iban a mandar a fumigar y nada y la segunda tampoco.“Yo conozco a muchos de mis vecinos que están enfermos de dengue y los mal atienden, mi cuñada le dio dengue y la mal atendieron en ves que le den medicamentos para el dengue le dieron para las vías orinarías, eso es una negligencia por parte del director del centro de salud.”“Hace falta que fumiguen mas , que fumiguen a diarios si no el dengue va a matar a todo Tizimin , y que utilicen un liquido bueno no como eso que usan ahora que ni efecto hace “</rdf:li>
</rdf:Alt>
</tiff:ImageDescription>
The stylesheet for importing data in versions prior to build 2606 (..\config\global\gn4_tark4_common\xsl_importImageFromXmp.xml) considered only the dc:description, and that was the reason of failure to import this metadata.
The old code
<gn4:summary>
<xsl:choose>
<xsl:when test="string($summary)">
<xsl:value-of select="$summary" />
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="//dc:description/rdf:Alt/rdf:li" />
</xsl:otherwise>
</xsl:choose>
</gn4:summary>
The modified code
<gn4:summary>
<xsl:choose>
<xsl:when test="string($summary)">
<xsl:value-of select="$summary" />
</xsl:when>
<xsl:when test="//tiff:ImageDescription/rdf:Alt/rdf:li">
<xsl:value-of select="//tiff:ImageDescription/rdf:Alt/rdf:li" />
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="//dc:description/rdf:Alt/rdf:li" />
</xsl:otherwise>
</xsl:choose>
</gn4:summary>