Most presentation programs are based on the Outline structure for creating text in a presentation. ClarisImpact 1.0 does not have the capability to convert outlines to Presentations.
PowerPoint and Persuasion documents will not convert directly to a Presentation document in ClarisImpact simply because ClarisImpact does not have a filter for translating these file formats. Your best bet is to copy and paste as much information from PowerPoint or Persuasion to ClarisImpact.
See Chapter 14 for instructions on how to get the best results when making a presentation.