21 injections is specified using files.

The previous injection information is given as

Advancing DPM injections .... Injecting 21 particles number tracked = 69, escaped = 0, aborted = 0, trapped = 0, evaporated = 0, incomplete = 0, coalesced = 0, shed = 0

The current information is given as: Advancing DPM injections .... Injecting 21 particles number tracked = 85, escaped = 0, aborted = 0, trapped = 0, evaporated = 0, incomplete = 0, coalesced = 0, shed = 0

There is no droplets evaporated, escaped and whatever. So the current number tracked should be 90 (i.e., 69 + 21 = 90). where are the 5 (i.e. 90-85) droplets??

did you hook a dpm udf to any boundaries?

No. I only concentrate on evaporation model and breakup.