Hi there,
When i create a new WSP which contains workflow in it, publish it to the office365 site (through the solution gallery), and activate it, everything works fine and I can see the workflow.
However, when i make changes to the wsp, specifically the workflow, and republish it, reactivate it, the workflow changes don't come through. Its like the WSP is somehow not refreshed.
To test this theory again, when I create a simple workflow with one "Log workflow History" event, it will log the event. When i change the workflow to have 2 events, repackage and rebuild the wsp and republish it, it still stays with the old workflow.
Its similar to the issue described here, but for office365: http://www.rightpoint.com/community/blogs/viewpoint/archive/2013/07/17/sharepoint-2013-quick-tips-redeploying-wsps-doesn-t-update-visual-studio-2012-workflows.aspx