Due to the absence of any provided plot details or character information for the film '{我永远记着你}', it is not possible to evaluate the presence or portrayal of LGBTQ+ characters and themes. Therefore, the film's net impact on LGBTQ+ representation cannot be determined.

No information regarding transsexual characters or themes was provided for the film {我永远记着你}. Therefore, an evaluation of its portrayal is not possible based on the given data.

The movie does not contain any action or adventure elements.

Without information indicating that this 1970 film adapts pre-existing characters from source material, historical figures, or prior installments, there is no basis to identify a character whose gender was established elsewhere and then changed in this movie.

The provided information for the 1970 film does not include details about its source material or character backgrounds. Without established canonical or historical racial baselines, it is impossible to determine if any character was race-swapped.