I have a IP SLA deployment and statistics seem to be stuck on the cisco devices (router & switches)
the ip sla process desplays the same data and generates an alarm condition in SW.
If is issue a "ip sla restart <number>" the next poll shows new and correct data.
The problem is you can't restart a range of processes, only one at a time.
Since SW orginally pushed the configuration out, perhaps it can push a restart command.