Vincent, unfortunately the Edit in excel functionality is available in IE browser only (exactly the one you did not seem to have tried). In ML8, upcomming release, we have changed and propositions data, can be edited in excel in any browser, using a csv file. If you are using a version up to ML7, you have to use IE since Edit in excel uses an activex control.
Hope this was useful. If there are more questions let me know.
Hi Miki, We have similar issue decisions table (that are over 500 records) there is no option to open the table in Excel. We are using Pega7.1.6, and we tried all browsers including IE8/IE9. Can you please let us know if any specific browser settings required.