The task status in the Console is wrong if the task gets executed over a specific site server with task server services installed.
This happens only at clients which are connected to one specific task server.
Clients that are connected to the task server run on the NS have a correct job status in the NS console.
ITMS 7.x - 8.x
The Task Server installed on the affected site server is an older version than the one on the NS.
CTDataLoad.exe on the Task Server, as an example, is on version 8.1.1641.0
CTDataLoad.exe on the Notification Server, as an example, is on version 8.1.1800.0.
Activate the task server upgrade policy on the site server to ensure it is on the same version as the NS.