The documentary 'The Guardians' focuses entirely on the conservation of mountain gorillas in Rwanda and the people involved in their protection. There are no discernible LGBTQ+ characters or themes depicted or explored within the film's narrative or subject matter, leading to an N/A assessment for LGBTQ+ portrayal.

An assessment of the film's portrayal of transsexual characters and themes cannot be made. The provided information lacks specific plot details or character descriptions necessary to determine if such elements are present or to evaluate their impact.

The movie does not contain any action or adventure elements.

Information regarding specific characters, their canonical genders from source material, or their portrayal in the film is not provided. Without these details, it is impossible to determine if any character underwent a gender swap.

The provided information, specifically the lack of character and casting details ('Starring: N/A'), prevents the identification of any established characters or their on-screen portrayals. Therefore, it is not possible to determine if a race swap occurred.