I don't really use Keyframing very often, but it has its uses. Recently I was using it for Text effects and making the Text slide from Left to Right whilst fading to zero.
Pretty basic stuff you may say, but it helped "lift" the movie (well, IMHO).
My problem is this: Sometimes I can use the Sync button [ near the start of the Keyframe Line] ....It's pretty small and I think I could see it changing the Icon, when clicked - I presumed this was an "on-off" feature, BUT as there seems to be no mention in Help (under "Contents") and Show me How is a bit basic, I've not found the Official Vegas answer. Searching under Keyframing shows the basic stuff, including labeling the Sync button - BUT not how it should be used . . . ie when you need it - and - when you don't.
This Problem is now compounded because on the aforementioned Movie, the Sync feature has stopped working. Moving the Keyframe marker doesn't move the Timeline, although it used to.
So, I wonder if you guys can explain how this is used? . .. and maybe suggest why it has stopped working. [ I am selecting the Text event (rt click, Edit Text Media)].... so I'm a bit stumped . . .
PS I tried a new Session and it's the same, just with one Text Event . . . . that Sync feature appears not to be active . . . like it's greyed out, so I can't even guess what it was changing to/from . . . .