I am facing some strange behaviour from RUEI purge collected data option.
Under RUEI Dashboard:
System > Maintenance > System Reset > Purge Collected Data
Under RUEI's help, it says "Purge collected data to remove all collected data from the appliance." However, there are times after I purged data, I still see some collected data.
Is this due to the reporter still monitoring the network traffic? Will stopping the collector before I do the purging help? (If yes, how do we stop the collector?) How can I make sure that all collected data is successfully purged?
your observation is correct, the purge collected data is actually purging data from the OLAP database model, i.e. processed data.
The data that has since been collected or is still in the processing engine might not be purged.
The process you have suggested seems to guarantee that there is no data in collector / processing that might not be purged.