I'm actually testing a plugin "Excel Connector for JIRA" from Transition Technologies S.A.
I contacted them and they said that the problem is on my side because they can't reproduce it.
When I export Issues from JIRA 5.1 to Excel, my excel file is automatically in [Read-Only] and [Protected View]. Even if all my settings in the "Excel Trust Center" are set to allow everything it doesn't work. As soon as I sync data between Excel and JIRA my workbook is back to "Protected View".
Is there a way to set JIRA to sent it in full rights mode ??
Thanks.