thank you for your answer! This is exactly what i did. The functionality i would like to have is something like this:
Custom-Post-Type: Movie -> Works
Custom-Post-Type-Template: single-movie.php -> Works
Custom-Post-Type-Template-by-Post: single-movie-movie1.php -> ???
I have a Custom Post Type and it has a Template which is working and used as default for this Post Type. Within this post type it offers me to choose a template for this particular Post but this is not working.
What i did so far:
I modified different hooks in funtions.php of the template to allow this template but it seems that it gets overwritten by the default template for the this post type.
Any help or point in the right direction is appreciated!