This is what I did in your workbook,
1) Closed "Sep" data source.
2) From Data Pane > Added a new data source > Excel > Pull only Sep tab
3) On worksheet, go to data tab > Edit relationships > select custom > remove all relations
4) Now in new worksheet, use Sep data source and build your view.
Hope this helps. Attached workbook.
Utilization - 15 Oct 2018.twbx 941.2 KB