I've recently found a lightly maintained PI system that I'm trying to nurse back to health. During the process, I've discovered that sometime in the past, someone must have accidentally changed the system date to several months in the future and then back to the correct date. This has caused all the active tags to have a snapshot value that is currently in the future. I believe this is causing all new data to be written to the archive in an uncompressed format.
I've yet to find a way to remove this bad value from the snapshot table. I've tried the procedure from the knowledgebase for deleting archive values on one point. Piconfig acts like the command was accepted, but the value remains.
This is PI v 3.4.364