Mabel, thank you for your response, but I think you do not understand the problem that we are having.
Let me explain, here is a picture of a Power App with the Content Tab Open:

This Power App is connected to a workbook, we can see that it is connected to the Transaction table in the workbook. However, nowhere can we see the name and location of the workbook. When we look at the connections screen we see one connection for One Drive which can be used by multiple Apps.
This is a bug! It is essential to be able to see which file is being used as an input.
As a workaround I have been embedding the filename in the app description.
Regards
Mike