Scheduled Task Multiple Processes

I have setup a scheduled task to transfer a file 3 times per day.  Everything works fine, however when I check the task manager on my server after a few days I see that there is a SmartFTP process still running for every file transfer I made.  These are building up over time and using system memory.
How can I ensure that the SmartFTP process shuts down when each scheduled task is complete - OR - have the system utilize the running process when a task starts instead of starting a new one?

The existing SmartFTP process should be used.
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That makes sense but Smart FTP is not doing that - it is starting a new process each time.  Is there any way to enforce the scheduled task to use a running instance of SmartFTP instead of starting a new one?