I need to write an importer for data submitted through a FWP form then exported to CSV (to bring it into another database). So that my importer can be run at regular intervals on the accumulated submissions, without re-importing a record, it would be useful if an identifier (GUID?) could be included in the CSV.
Without this I could probably make things work using the CreatedUtc value, but I'd prefer to work with persistent identifiers for the submissions.
Would this be possible? Or any other suggestions?