Maybe it's a setting in airio why it didn't save statistics and all is lost.
a quick look and I found this
# Wait for one more keypress before exiting Airio - boolean
# In some scenarios (like running under FireDaemon) the application
# cannot be closed by a single keypress or command, but first data
# must be saved and then it could be killed.
StopExit=false
and
# Turns on/off immediate log data flushing to disk - boolean
# If set to true, log data will be complete even after program crash.
LogFlush=true
Don't know but maybe something to dive into