Hi
To avoid having to resynch after every cut proceed as follows....
Click the "Options" tab on the toolbar and then the "Other" tab.In the top box relating to the action to take when sound clips overlap, select to "Push clips to the right"
Put VP into timeline mode and load your video onto the sequence line with the dubbed sound onto soundtrack 1.
I am going to assume that they are identical as far as speed etc.and that the video is in one long block.
You now therefore have two audio tracks visible, the original audio track connected to the video and the track to be dubbed over the video.
Zoom in as mentioned in my last post and get the two tracks in synch at the start. If they are identical then they will (or should) finish together. Play the video to ensure that the tracks remain in synch to the end. If this doesn't happen then you will have to reset the synch manually every time you make a cut or VERY carfully adjust the speed of the video to obtain a match. I am going to assume they play OK.
Right click the audio track and choose to "Adjust clip volume" In the window click the box to "Mute clip" followed by OK. Your dubbed track will now be the only one playing.
Right click the video to select it and then play the video (or drag the cursor bar) to the point where you want to make a cut at the start of your edit.
Right click the "Split" button to make the cut. Note that the cursor will remain in place.
Now RIGHT click (NOT left click) soundtrack 1 followed by the "Split the track" button at the left end of the soundtrack by the black star. This will split Soundtrack 1 at the same cursor position as the video track. (Cursor hasn't moved)
Move the cursor now to the end of the edit and repeat the process. You will now have cut the video as well as soundtrack 1 at the same precise points.
Right click the video clip you have just created and choose to "Remove selected clip". The video will readjust itself end to end leaving no gap. This, of course puts the soundtrack out of synch but no problem....
RIGHT click the soundtrack 1 clip that you wish to remove and choose "Remove selected audio" Unlike the video track, sound clips dont jump left to fill the space left by the deletion. So simply grab the soundtrack on the right and pull it left so it overlaps the section (which is in synch) on the left. Release it and it will set itself immediately into position without leaving any gap.
As the sections you removed from both tracks were identical in length, the soundtrack and the video should continue in synch following the cut.
Hope this helps
Nat