Symptoms

SharePoint list drops the associated K2 workflow after Setup Manager or the upgrade to 4.7
 

Diagnoses

After upgrading to 4.7 and also after running the K2 Setup Manager on the K2 servers, the SharePoint lists seems to drop the association to the K2 workflow and new workflows do no start automatically nor we can start a new instance.

The screenshot displays an empty list, although it displays an existing workflow that was started on the list before the update.

Re-Deploying the workflows using K2 for Visual Studio seems to resolve the issue and the workflows get re-attached.
 

Resolution

We have logged this as a Critical Bug and it will be fixed in the installer as soon as possible .

For now please take into consideration that you will need to redeploy Sharepoint Integrated Workflows built using K2 Studio or VS again after running the Smartforms Setup --> Configure