ESF Monitoring - Participants - When participation records are updated following re-entry into an operation, does the previous result need to be kept and stored in the participation record/database?

No. It is not necessary to keep the previously recorded result data for participants that re-join the same operation. Only data associated with the initial entry and final exit date are required. Note however, that the system should ensure that any reported indicators including data for a first result are updated accordingly and that the revised results are transmitted to the Commission through the SFC.