When they made TMP, they didn't all sit at the table and plan out 5 additional movies on the spot. It just happened. Everyone came into TMP as if it was a one shot deal, all the other movies were just flukes. TMP's budget was planned for TMP, not for for the other movies.
But not at 46.000.000 - that number includes the costs for the first proposed film and then Phase II.
I'm pretty sure that $46,000,000.00 included everything starting with Planet of the Titans up to The Motion Picture.
That's what I said.