May I suggest an addition to this technote.
I had an experience trying, unsuccessfully to remove a server from an EV site.
After much frustration and investigation we discovered there were existing DTrace tasks configured on some of the Tasks.
These were not visible at the time as the "Advanced Settings" were disabled and understandably the Admin missed them
Since we had already attempted the delete we could no longer get to the DTrace tasks to delete them.
In the end we had to manually edit the SQL to fix this, with the help of Symantec Support. See Case 415-626-593
May I propose an addition to the technote along the following lines :-
Ensure there are no DTrace tasks configured on the server
Enable the Advanced Options in the EVAC
Select the Tasks and delete any DTrace Tasks associated with them.
Now Delete the Task