I've recently upgraded Zorro to 2.44 and I've noticed an issue with the StartDate. It works well when I set this to the beginning of the year, but I get a 047 warning once I adjust it to a later date. As a result, Zorro starts reading my .t6 data for the following year.

Maybe some gap in your historical data? When I test your script with the latest Zorro version, FXCM Assets, and EUR/USD, I get:

20200201: Date: 200131 18:39:00 | Price: 1.10787
20200101: Date: 191231 09:19:00 | Price: 1.12083

That's what I would expect.

I wrote my data to a CSV file for further inspection (I can't run ZHistoryEditor.exe under Wine).

For 2020 this starts at StartDate = 20200102.

As you can see there's no gap between the Jan 2 and Jan 3 2020:

200102 23:59:00,1.11715
200103 00:00:00,1.11715

However, once I change StartDate to 20200103, Zorro's screen output becomes:

Warning 047: EUR/USD first bar on 2021-01-03
Test: TestStartBar EUR/USD 2020..2022
Assets AssetsIG
Date: 210103 23:01:00 | Price: 1.22375

I've added 'LookBack = 0;' to my test code, to make sure it was printing the first bar, based on the given StartDate.

Update, I've downgraded to Zorro 2.40 and now it returns the correct data: '200103 00:01:00 | Price: 1.11706' when 'StartDate = 20200103' & 'LookBack = 0'

Since you don't have this issue, maybe there's a problem with how Wine handles Zorro 2.44?
From what I remember, that there was a date issue with Wine.

Edit: found that thread -> https://bugs.winehq.org/show_bug.cgi?id=47221

Hmm, that bug has meanwhile a workaround in Zorro. I would also assume that a Wine bug affects also 2.40.

Can you test it on a Windows PC?

Under Windows 10 only Zorro 2.40 returns the correct date, but Zorro 2.44 returns the bar from 1 year later.



Without using 'LookBack = 0' it does return the correct date with Zorro 2.44. Is this expected behavior?

Looks ok, unless the error message is wrong. Have you checked the 2022 and 2020 history?

Only the 2022 history is missing, but that's not the issue because it switches from 2020 to 2021 when 'StartDate = 20200103' & 'LookBack = 0'
2020 & 2021 sets are OK, I've used those many times before without any issues with Zorro 2.40

The reason for switching is that the 2019 file is used when you dont set lookback = 0. But the 2020 problem is not clear. It does not happen here. Can you test it with the latest version 2.46? Does it happen with other start dates or only with 2020? You can also contact support, they will work with you to sort that out.

Sorry for my late response.

I've removed the LookBack setting, but there's still a different date output. When I install Zorro 2.44 in the same directory as Zorro 2.40, it returns 'Date 200102...' when 'StartDate = 20200102', but when I install Zorro 2.46 beta under a new directory, it returns 'Date: 191231...' with the same script.

I thought, let's check the .t6 files and I've noticed that the 2.40 version for 'EURUSD_2020.t6' was 11,638 kb v.s. 11,465 kb for the Zorro 2.46 version (and probably Zorro 2.44 under a fresh directory as well), so I've replaced this one in my formal 2.40 directory (where's 2.44 is installed) by the newer (and smaller!) one, but there's still an output difference after restarting Zorro 2.44.