Editing Articulate

We received an Articulate training from one of our vendors, who contracted another company to create a module for them.  Our vendor has sent us the link from their vendors server to be uploaded into our LMS system.  I need to make an edit to their program prior to uploading it.  I was told there was a way I could use the links to edit the current module.  Does anyone know how this is done.  The edit is minor.  How do I keep the integrity of the program intact.