[Xymon] graphs not showing on column but are in trends

I've got a strange problem with a new graph. I've added the graphs.cfg entry and it's named the same as the column on the Xymon display

[vs_stat]

    FNPATTERN vs_stat.(.*).rrd

    TITLE Connections

    YAXIS Connections

    DEF:conn at RRDIDX@=@RRDFN@:ds0:AVERAGE

    LINE1:conn at RRDIDX@#@COLOR@:@RRDPARAM@ Conn

    GPRINT:conn at RRDIDX@:LAST: %8.2lf %s (cur)

    GPRINT:conn at RRDIDX@:MAX: %8.2lf %s (max)

    GPRINT:conn at RRDIDX@:MIN: %8.2lf %s (min)

    GPRINT:conn at RRDIDX@:AVERAGE: %8.2lf %s (avg)\n

    -l 0

I've added it to TEST2RRD and GRAPHS in xymonserver.cfg (TEST2RRD entry is vs_stat=devmon and GRPAHS is vs_stat::1)

All is working as expected except that the graphs are only showing in the trends column and not in the vs_stat column. I based all this work on the if_load definitions for a cisco 6509 from the standard devmon templates and that does show on the of_load column as well as the trends column but my new on doesn't.

Has anyone any idea what the issue might be?