Question about Stargate distribution rights.

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I know the Stargate (1994) movie is owned by StudioCanal and the North American Disc rights are owned by Lionsgate. Some time ago, the movie was on Prime Video and I remember seeing the MGM logo at the beginning of the movie, yet I added the free code from the Blu-Ray and StudioCanal had their logo at the beginning. I assumed MGM had all of the television rights (including streaming) for the movie even though they don't have the home video rights.