Hi @Mike, at present GAS is the best way for bulk data import into an existing Gsheet that is driving the app. I have thought of writing a web app using Firebase where users could set up CSV imports (they would specify the uploads folder, the name of the Gsheet file or its id, the sheet name, and some frequency) but haven’t yet gotten around to it.
Usually though one always wants to pre-process the CSV file in some way before adding the data in to the Gsheet and that is where I am not sure my idea is feasible. For example in one of my clients’ app, I need to strip the text in a column in the CSV before pasting it.
In your case, is it a simple case of appending the lines from the CSV to the Gsheet?