• FusionRetail6 is running
• I again run FusionRetail6 and closed the previous running FusionRetail6 from login screen.
• It also stops all exes.

Answer: 

When you run FusionRetail6 in your system it starts…

1. One instance of ML.exe
2. One instance of MLIM.exe
3. One instance of Print.exe

Whenever you start a second instance of FusionRetail6 it detects that ML, MLIM and print exes are already running. So it does not start second instance of ML, MLIM and print exes. 

When you close one instance of FusionRetail6 in your system it closes …

1. One instance of ML.exe
2. One instance of MLIM.exe
3. One instance of Print.exe

For that very reason, in System Diagnostic Print, Ml, MLIM exes are showing Stop.