When user search any issue from Issue Navigator, they can see the Time waiting for support and Time to resolution values as per issue-navi.png screenshot.
Export issues to Excel also able to show the Time waiting for support and Time to resolution values as per xls.png screenshot.
However, the data is not shown in XML format as per xml2.png screenshot.
ServiceDesk Add-on v188.8.131.52
Locked Custom Fields (locked-vs-unlocked.png) able to show the values in XML format if compare xml1.png with xml2.png.