Digital BW, The Print

For the 2200 QTR/Gui has curves for "EEM 2200" cool, cool SE, sepia, 
and warm. It also has curves for "UC-EEnh Matte" cool, cool SE, 
sepia, and warm. Since EEM and EEnh Matte presumably are the same 
paper, and since both sets of curves are for the same printer, what 
is the difference between the two? Is "EEM 2200" perhaps for the UT7 
inks (I assume "UC" refers to the UltraChrome inks). I didn't find 
either curve listed in the glossary.