When you have running workflow instances and you upgrade an instance version, using the Live Instance Management API, the old version still displays in the list of instances in K2 Management > Workflow Server > Workflows > [Category Name] > [Workflow Name] > Instances tab.
- Ensure you have K2 Five (5.1) installed.
- Download the K2 Five (5.1) FP18 from K2 Partner and Customer Portal.
- Install the K2 Five (5.1) FP18 to apply the fix.
- It is recommended to clear the browser cache.