How to resete "Workflows in Progress" counter on Document Set Workflows page?

Hi All,

I have a site on DEV server with few Document Sets. Every document set has Workflow attached trough Content Type. I have deleted all items from Document Set excluding one item where is running one workflow but counter on Workflows configuration page shows"Workflows in Progress" - 27 for my content type. This is definitely not correct. I was plying with PowerShell to get those running workflows but I only could get one workflow that was actually running. We are using K2 Workflows on our server. K2 is using SharePoint Workflow to kick off K2 workflow instance. So. I am thinking the issue is on SharePoint side. K2 shows only one running Workflow instance.

Is there any way to reset this counter to show the correct count of running workflows?

Oleg