The trade date 200102 is correct, since this was the first trading day of 2020.
No, I don't receive that 047 warning anymore (I forgot to mention this, sorry).
The issue is that my Zorro versions return different date outputs with the same code and the same .t6 files. You can see this on my last screenshot.

Code
function run()
	{
	History = ".t6";
	BarPeriod = 1;
	StartDate = 20200102;

	if(Bar > 0)
		{
		printf("\nDate: %s | Price: %.5f",strdate(YMDHMS,ldate(UTC,0)), priceClose());
		quit();
		}
	}

Last edited by Grant; 03/18/22 12:10.