Curious what episodes were used to make the 99-minute movie?

I know the last half is "Brother Mine", as "Cat" is killed at the end and it was Begonya Plaza's last episode. I've seen the other episodes that Ms. Plaza was in, but don't recall any of them being joined with the VHS movie that I remember seeing years ago. It had to be one of the first 6 episodes though.

I remember watching it when it first aired on CBS and where I lived the episodes were aired out of order. So the characters of "Cat" and "Maria" would appear one week and be missing the next week, so this probably adds to my confusion.