Thank you!
Quote:
You were likely testing this on a UTC server.
I downloaded history into MT4's History Center on two servers - one in UTC (Alpari) and another in ET(Gain). Both had UTC timestamps.

Quote:
Historical spread values are only used in MT5 and not MT4
Yes, dug it out on MT's forum as well.

So, what's the solution?

Does Zorro save Asks or Bids when requesting historical data from MT5?
From experience, do spreads on MT5 demo accounts same as on live accounts?