After upgrading ArcGIS Enterprise from 10.7.1 to 10.8.1 the Modified Dates are getting reset to the original creation date for all user content.
We have multiple environments and I have attempted upgrading the development and test environments. In both instances encountered the same issue.
I have found a very similar issue logged as a BUG-000112885
As per the bug report, the issue was with modified dates getting set to the upgrade date. Also the specific issue was fixed at version 10.6.1
In my case the update/modified dates are getting rest to the item creation date.
Prior to running the upgrade I have installed all the available patches.
Would appreciate some help resolving the issue or any workarounds to update the modified dates.