Rudder

with a metatechnique that has 4 component key identical in a section, for instance

<SECTION component="true" multuvalued="true" name="File replace line">
  <REPORTKEYS>
     <VALUE>${grub.knowledge.fstab_path}</VALUE>
     <VALUE>${grub.knowledge.fstab_path}</VALUE>
     <VALUE>${grub.knowledge.fstab_path}</VALUE>
     <VALUE>${grub.knowledge.fstab_path}</VALUE>
  </REPORTKEYS>
</SECTION>

once loaded in the web interface, it transforms into 4 sections with one key in the Change request screen
When we create the directive, it is fine, but when we update the directive, it becomes

<section name="File replace line">
  <var name="expectedReportKey File replace lines">
    ${grub.knowledge.fstab_path}
  </var>
</section>

and the 3 others sections are dropped (as seen in the change request or event log)

then, report is unknown