Rule Regression in 2.9

[mstarks01]

The following rule works in 2.8.3, but not 2.9:

<rule id="100001" level="1">
<if_sid>550</if_sid>
  <match>/var/www/html/example.com/www/wp-content/uploads/sucuri/</match>
  <description>Sucuri Plugin Upload</description>
</rule>

[sempervictus]

Is the underlying sid being hit?