Thank you, GraHal for the information, I wasn’t sure if it is 18 hours. In fact, I tried to do that for long back test, but sometimes forget when it is a shorter back test (like 1.5 hour) especially not aware time is approaching 18 hours. I admit I could do better, but sometimes when too obsessed on coding, I forgot the time and come back to see the code is gone 🙁

If no option today, I will carry on to practice regular saving, or maybe add a timer to remind me that it is already 17.5 hours 🙂

But could be good to request as a feature to PRT (to allow default saving before it closes down)? Or maybe it is just me feel this hassle?