I have the same problem. bobhc, that doesn't work because it only shows the first page of whatever excel doc you are linking to. In my instance, I am using an excel workbook with over 20 sheets, each with several graphs, tables, and cell ranges, that all need to be dynamically updated in powerpoint's many slides that is filled with the data within the excel workbook. I only want to edit the excel workbook and just have all the data in the powerpoint presentation automatically update.
For your guidance - when I click on a microsoft excel object in powerpoint, it opens up a brand new phantom workbook titled "worksheet in 'name of .pptx" instead of moving back to the source excel file. Also, when you look at the properties of the phantom worksheet, it has no location, no size, nothing. It's like instead of powerpoint just referencing the source file, it embeds an entire workbook into powerpoint somewhere...
help please!