Dear Michael.MS,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
I carefully went through your question and please don't worry. Together we can solve this situation.
I tested from my environment, and I If I update data from with in the Source "Excel Workbook", both the Excel graphs and PowerPoint graphs update.
These are the steps I took:
- Created data, and graph from Excel, and saved the file in Documents.
- Copied the graph and used Ctrl + V, to paste it into a PowerPoint slide.
- From the bottom of the pasted graph, I selected two options for testing: (Use Destination Theme and link data) and (Keep Source Formatting and link data).
- Went back to Excel data source and updated the values. Changes reflected in both Excel and PowerPoint, with both link options.
Note:
- All updates can reflect nonmatter I update the existing values or I add new entries.
- But for new entries, if you just add a new entry below the previous last entry, it may not reflect. This is because, before linking the data, you had selected the boundary, and now you have added another entry, outside the linked boundary. for this matter, you may need to link again. but if you add an entry within the boundary, it will reflect fine.
So now, to better understand your situation and provide proper troubleshooting steps;
- Could you please tell us how you linked the graphs?
- Also, provide the version of your PowerPoint. From PowerPoint, click File > Account and provide a screenshot of that page.
If I misinterpreted your question, please feel free to post back and point it out.
Thank you for your kind understanding and cooperation! We look forward to your reply.
Sincerely,
Edwine | Microsoft Community Moderator