pop-up

I created a pop-up xml document and all of the fields populate correctly in my application except one. The LABELS field had been assigned a sentence-case alias in the mxd/msd, so I changed the alias to all capital letters to match the field name. This still didn't work. I even deleted the original LABELS field and created a new one with no alias and republished the map service, but the pop-up still doesn’t read the values. Any suggestions? Here's my pop-up xml:

<?xml version="1.0" ?>
<configuration>
<title>Each barrier is ranked by its ability to reconnect the most spawning habitat for Northern Pike for the least cost. In some cases multiple barriers must be repaired together to provide the estimated habitat gain. These grouped barriers have the same ranking, followed by an asterisk.</title>
<description>
<![CDATA[<b>Stream: {STREAM}<br>Priority Rank: {LABELS}<br>Est. Cost to Make Passable: ${INTEGER_COST}<br>Ownership: {OWNER}<br>Fish passability: {FISH_PASSABILITY}<br>Problem for fish: {PROBLEM}]]>
</description>
<fields>
<field name="STREAM"/>
<field name="LABELS"/>
<field name="INTEGER_COST"/>
<field name="OWNER"/>
<field name="FISH_PASSABILITY"/>
<field name="PROBLEM"/>
</fields>
</configuration>