[ISS Support Case] Migrated Historian Missing Days Of Data Randomly
Last updated: October 17th, 2025Description
We are upgrading a customer from WSP 2014R2Sp1 to 2020R2Sp1 and everything went fine except Historian. Everything came up ok but when I moved the old circular files over there is about 4 days that seem to be missing. Has blocks for the time period that is missing. On the old historian can see the data but on the new historian those 4 random days where data is missing. Can see older history blocks
- 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: | 10/20/2022 |
| Case: | 82858 |
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