Im having this issue, where im trying to update a list item in another site using a k2 workflow that runs when a list item updates.

Source list, where K2 runs: <sitecollection1>/Site1/lists/List1

List that needs to be updated: <sitecollection1>/Site2/lists/List1

The two lists have the same name, and the same structure too. the smart objects created also have the same name (List1) but in different sites.

When i am designing the workflow to do this, i add a 'Update list item' action and start to configure it to update the list item using the smart object List1 in Site2. 

I go thru the wizard, browse to the site collection, select the site (Site2), then the list (List1) etc.. and click finish, when i run the workflow nothing happens. I go back to check the update list item action, go thru the wizard only to find that it is trying to update the smart object List1 in Site1, instead of Site2. I've updated this multiple times, but for some reason it would change back everytime.

Has anyone come across this? how can i resolve this?