@pchegoor The tasks work in 2 phases: design time and run time. The field examination happens at design time, allowing you to see the field names and specify attributes. When you click Finish, that phase is completed and the task is dismissed.
But then EG needs to actually run the Import process with your settings. The task reinitializes, and downloads a copy of the source file for the cleansing step. This step will happen immediately upon Finish, but also any time you simply refresh the task by re-running the project or flow.
That's how it works. If the source file is so large that the download is a problem, I'd suggest using the Import task on a smaller version of the file to design the fields and generate the code. Then copy that into a SAS program to use on the full file in subsequent runs, skipping the download altogether.
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