Video Clip not linked with audio?

I just upgraded to cc 2017 from Premier 5.5.  I used to be able to drop a video clip with audio in the timeline if I wanted to cut the video clip, the audio would also be cut at the same time.  Now if I cut the video clip the audio does not get cut anymore.  So if I move the video clip somehwere else in the time line the audio stays where it was so the audio is now out of sync.  It's as if they are not linked together?  I'm sure it's just a change from 5.5 to CC2017 but I need to know how to do set it up so this happens automatically.