Extra is remeved in "GET SMART".
(In this case, AnyDVD seems to be almost correct, I confirmed by PgcEdit's Trace Mode with using it.)
It has the extras. It is same as main movie and jumps to 51 extras movie.
Extras main movie is VTST_1 - PGC_8 and 9. (Real main movie is VTST_1 - PGC_1.)
It is replaced by dummy, 36 of 58 cells of PGC_8 and all of 67 cells of PGC_9. (in which Cell_1 to 16 of PGC_9 are not replayed, so correct to be replaced.)
Extras jumped movie is VTST_2 - PGC_1 to 42.
They are through button of VTSM_1 - PGC_9 from PGC_8 or 9 of_VTST_1.
It is replaced by dummy, PGC_4 to 42.
And it is no problem because the cell is 0.15 sec.
Below cells are unplayable by cell command , but not replaced.
^Cell_3 of PGC_4 of VTST_4.
^Cell_3 of PGC_5 of VTST_4.