[ISS Support Case] Missing Historian Data Post 2020 R2 SP1 Upgrade

Last updated: October 17th, 2025

Description

I have missing data in the Historian database. I have the History blocks, but the data is missing from 6/23/22 back. This happened after upgrading to System Platform 2020 R2 SP1. 2017 2020 R2 P01 -> 2020 R2 SP1 Upgrade was done on the 20th

Author: Kevin Modlin
Published: October 17th, 2025

Details:

Product: Historian

Version: 2020 R2

Solution: [Solution is visible below when you're logged in and have a current subscription]

Date Created:	07/01/2022
Case:	82029

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