Excel linked to PPT not updating, in Teams Site

Hi.. I have similar problems since moving to teams, which I did not face when it was still a simple local drive or even the shared drive.

1. I used to paste link from excel ("xls 1") to ppt for the routine routine ppt reporting ("ppt 1") --> paste link can be table on the excel sheet, graph or else

2. Moving to next following month, I simply copied the "ppt 1" to be "ppt 2" (or through save as function) and the "xls 1" to xls 2" (same way) to the new month folder

3. Once I finished the "WORK" on the "xls 2" for the new month numbers/analysis, I then opened the "ppt 2", and go to each slide which has table/graph linked to the "xls 1", and do the change link from "xls 1" to "xls 2" though the function edit link and the change source link

4. Since moving to team, this is not doable anymore (so I need to copy and paste link for everything, which takes time and not effective).

Any input so I can do as old time? Thanks

Fahim