Copy Existing Workflow

Hi. I am trying to create multiple copies of the same workflow and I am having some trouble. I have tried the different ways I have seen, whether it was the process explained at http://ignite.azamba.com/2013/10/sage-crm-how-to-clone-a-workflow-using-the-component-feature/ or by doing it using the greytrix explanation on this post. https://community.sagecrm.com/user_community/f/84/t/5462.aspx

Using either I can create one copy of the workflow but when I try and upload a component again to create a 2nd copy (after renaming the 1st copy to something else) the Available Components box stays empty. Its almost like you can only upload one copy per entity as I managed to upload a copy of a case workflow, an opportunity workflow and a lead workflow, but I cant upload a 2nd copy in either case.

Any ideas would be greatly appreciated.

Attempted on CRM 7.0, 7.2 and 7.3

Thanks