Hi Andrew,
I had this same 180 day problem back in 2019 and you lifted the limit. Here's what you said. Perhaps forgot to include the IGNORE_MAX_DAYS thing in the new plugin? Would appreciate you putting it back in. It apparently didn't cause any problems since 2019.
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I hacked off max_days with a macro IGNORE_MAX_DAYS.
Can you see if it fixes your issue?
You can download it here:
https://github.com/AndrewAMD/SierraChartZorroPlugin/raw/master/releases/0.9.3.1/SierraChart.dll