Not able to use the same datasource file name in a single Gateway

Greetings - 

We are an ISV with a multi-tenant customer database. For a single customer, I extract their data into individual files with names such as “Company.txt” & “Clients.txt” and save it to a unique customer folder. A Power BI Workspace was created for the Company with a Dashboard & Report. The On-Premises Data Gateway was installed and configured and daily refreshes have been running successfully for some time. All Good. Now comes customer number 2.

I was thinking (hoping really) that the gateway would be tied to a workspace, but that is not the case.

It does not appear possible to configure a single On-Premises Data Gateway to use a file datasource with the same name as an existing file datasource, but can the community confirm this?

Trying to add the datasource name for a different customer in the gateway generates the “Duplicate data source name” error message. The source file is in a different folder, but that appears not to matter. 

What are the possible solutions?

Thanks for any help you may be able to provide!