TV mini series that only has credits sequence for final episode

TV mini-series Warriors (1999) tt0119873 consists of two parts which were shown on consecutive nights.

Only the second (final) episode had a closing-credits sequence; the first simply had a "To Be Continued" caption.

In this situation, should the IMDB credits (cast, crew) be listed at series level, or should they instead be listed for episode 1.2? At present they are listed at series level.

For any other mini-series that has credits sequence for every episode, I'd submit the credits at episode level and delete any that were at series level.

This is different. Does IMDB regard it as a single movie that happens to have been divided into two halves to be shown on different nights? I'm happy to do it either way.