[ic] why isn't my loop-data being interpolated?

[interchange-users@icdevgroup.org (kenshin@planetanime.com)]

Here's something strange... or at least unexpected to me.  Can someone
figure out why this doesn't work?  It displays properly but the the
[loop-data] tag in the <a href> does not interpolate or reparse (i've
tried using both) at all.  The strange thing is the [sql-param]
interpolates correctly.
mike k.

---=Begin code snippet=-------------------------------------

[query sql="select code, name, selector from area order by sort"
        type=list]
    [list]
    <b>[sql-param name]</b><br>
[loop prefix="catlist" search="
        fi=cat
        se=[sql-code]
        sf=sel
        tf=sort
        rf=code,name
        " interpolate=1]
[on-match]
&nbsp;&nbsp;<a href="[area href=scan
            arg="
              fi=products
              st=db
              co=yes

              sf=category
              se=[catlist-data cat name]
              os=yes

              sf=prod_group
              se=[sql-param name]
              os=yes
            " interpolate=1]" class="maintext">[catlist-data cat
            name]</a><br>            [catlist-alternate 2]</tr><tr>[/catlist-alternate]
[/on-match]
[no-match][/no-match]
[/loop]
    [/list]
[/query]

---=End code snippet=--------------------------------