TS Sorting. Call content item, then run report.
<mvt:foreach iterator="order" array="admin_order:orders">
<mvt:assign name="l.product_count" value="miva_array_elements( l.settings:order:items )" />
<mvt:if expr="l.product_count EQ 1">
<mvt:assign name="l.settings:order:single_product_code" value="l.settings:order:items[1]:code" />
<mvt:assign name="l.settings:order:prod_count" value="1" />
<mvt:else>
<mvt:assign name="l.settings:order:single_product_code" value="''" />
<mvt:assign name="l.settings:order:prod_count" value="l.product_count" />
</mvt:if>
</mvt:foreach>
<mvt:item name="toolkit" param="asortmulti|l.all_settings:admin_order:orders|:single_product_code|1" />
<mvt:item name="toolkit" param="asortmulti|l.all_settings:admin_order:orders|:prod_count|-1" />