Creating templates - half of template gets deleted after saving

Creating templates - half of template gets deleted after saving

I have been creating templates the last two days and, while I have created many templates successfully in the past, all portions of the templates I edit or create get deleted after the review of systems box. The review of system box also "freezes up" and does not let me move around the entries after saving. Have lost so many hours of work and original templates destroyed without being able to create new ones in their place (nothing will save appropriately)!