Track matte should respond to new track insertion

[tomhan]

Current behaviour:

Place a video clip on V1 and a clip which will act as a matte on V2.

Place a track matte effect on track on the clip on V1 and set it to use V2 as a matte layer.

Add a new video track at position V1, such that the old V1 becomes V2, and the old V2 becomes V3.

Outcome: The track matte will still use V2 when it should point to V3.

Desired outcome:

The matte layer should use V3. the later used should increment by the number of layers inserted beneath it. 

I can't see any scenario where this shouldn't be the desired outcome. Can you?

[Ann Bens]

That is not how it works.

You need to set the track matte to the video track manually if you move the clip with the effect up or down.

The effect cannot predict which track you are going to use next.

You might also have some other clips superimposed (e.g. a logo).

[tomhan]

I understand that's not how it works. I'm proposing it as an improvement. 

To give an example from After Effects:

If I parent a layer to layer 1, then add a new layer before layer 1, the parent will correctly reassign.

I'm suggesting the same behaviour should apply to track mattes in Premiere.  The application as a whole knows when I add in a new track, and it knows where that track is in relation to the track matte. By not reassigning it, the user is far more likely to end up with a fault in their edit than if Premiere reassigned it automatically.

[Ann Bens]

Move from Bugs to Idea board.