I have created a test Azure Workflow Manager 1.0 Workflow on a SharePoint 2013 List in VS 2012. This workflow just writes a message to Workflow History List. I deployed the Workflow and it is working fine.
Then I changed the message I was printing to Workflow History List and re-deployed the workflow but workflow is still printing the old message. So far I have tried following options but no success so far:
1. Clean, Rebuild and re-deployed.
2. Deleted and Recreated the list before re-deploying.
3. Deleted and re-created the workflow association with the list.
4. restarted IIS
Not sure why Azure Workflow Manager or SharePoint is maintaiing the old copy of Workflow.