The current configuration of Prep basically only allows for "full" loads of data. It would be nice to be able to write/append data to an output rather than completely replacing it. This way we could join with the output file to determine what data is "new"... process the new records... and append them to the output file. Then when the Prep flow runs on a scheduled basis it only has to pick up incremental/differential data.
--> Community Manager update [Ciara Brennan]
Idea marked as Duplicate. Please refer to #8823