Some issue records, especially with high SLA values show incorrectly when exported to Microsoft Excel.
- Create a Service Desk issue, and leave it for a few days (works best this way)
- In the Issue Navigator, add the 'Time to resolution' and 'Time waiting for support' fields. Search for the Service Desk issue, and take note of the values of those fields
- Export the search results into Excel (tested with 'Current Fields'), and check the value for those fields.