Transient- Cant Restore previous sessions
 

Hi..
I am doing transient analysis in Fluent -14 for the first time,
Bcs. of my constraints i am not able to run my analysis continuously for 24 hrs. I need to interrupt.. I am saving all work in case and data files also saving the workbench file..
The problem is - i am not able to restore/resume from where i have stopped previously.. Analysis is Continuing with update only in iteration number but time step from beginning, it again starting from first time step. ( eg. after 4 timestep 80 iterations will get completed if i interrupt and start,, iteration number will be 81 and time step is first only- means it again calculates 4 steps which already calculated..)
Prob Details- With 1800k Elements.. Around Thousand time step with 3.3e-3 step size and each of 20 iteration.. i am not initializing again.

What could be the mistake from my side? what can be the solution?
Kindly Help.. I hope the info i have given is sufficient..
With Thanks
Gowrav