QT Support stated today that QV Engines are assigned based on the start time of the task. So, if Task A has just finished the reload phase, releases its engine, enters into the distribution phase and is seeking a QlikView engine – one would be assigned based on the start time of the task. This should mean that this original task should get priority over any task that is chronologically ‘later’ (which is a good thing).
As you don't need to distribute the report and want to do the reload only , than in this case you can create a External task , which pass only reload instruction to the QMC.
"qv.exe file path\qv.exe" \r "application path\application_name.qvw"
Pass the above command while creating the external task.
NOTE:- In this you won't get the task log in QMC.