Some business users have been working on several apps. These apps have been published and a 'template sheet' has been included for end users to create their own visualizations. The end users can duplicate the app and create their own sheet displaying anything they want with the data already loaded in. The challenge here however, is that the end users have certain files that are specific for their departments. They want to be able to load in this file through the data manager (additional to the already loaded data).
When duplicating an app, the data load editor is not available. It is possible to add new data through the data manager, but when you reload you will only reload the file you just added.
Is there any solution in which you can keep the originally loaded data and just add some extra data to it?
I'm going to say no, since you cannot edit a Published App; it must be in your work stream which makes it individual to the user; since you are saying they cannot access the Data Manager, I assume it's in a Published Stream.
If you were to duplicate the app to each users work stream, they can add, but not in a way that you could continue to update from the main app, e.g. changes would need to be manually copied to work streams or they would have to re-apply their changes.
One way might be to binary load the data for the app, then each user could tack on their own, but you'd still have a manual reconciliation process.