deleted particles in injection
 

I am running the unsteady DPM with the steady-state solver. I have droplet breakup model. When I save my data file and load it next time, everything is ok. But when in start my interation again, fluent says: Deleted 'x' particles in injection 'x' during transient iteration!
I don't want fluent delete my particles. What can I do?

You may have not defined injection point correctly.

I used group injection type!

some of particles go out of domain because the injection has not been defined correctly.