Issue
After upgrading to K2 5.3 or 5.4, some SmartObjects end up missing information on who created the SmartObject and show the incorrect date for when it was created (i.e. 1/1/0001
12:00 AM). This issue is created due to normalization that occurs on the SmartObject tables while upgrading.
Resolution
Please log a case with Nintex support to obtain the script used to resolve this issue.