How can I edit a data source in Planning?

Summary: I have migrated reports from Narrative Reporting to Planning, in version 26.07, and the reports were pointing to a data source in Narrative Reporting that have a different name than the data source in Planning. Instead of going through every single report to point the data source to the Planning data source, I would like to edit the name of the data source to match what the name it has in Narrative Reporting, so that all of the reports can work. If editing is not possible, then I would like to know if creating a new data source would