Expression

I am trying to planar track a shot from fr 80, however, when I track forwards, then go back to fr 80 to track back, the track goes screwy, same thing if I track back then track forward, so I have 2 tracks, one up to frame 80 and one from frame 80.
Is it possible to use an expression to combine the two?

Have you tried pressing ‘set’ to reset the reference before switching directions? That cures the screwed backwards/forwards track sometimes.

Ah, no. I’ll give it a go.
Worked! Thanks Andy!