question about Abbey Wood

A mile or two west of the station the north track (eastbound) is going to be diverted north, running across the top of the Crossrail tunnel portal. The Crossrail tracks will thus emerge between the two Southeastern tracks, providing cross platform interchange as in the diagram linked above. I believe there'll be a pair of reversing sidings east of the station, which aren't shown on that diagram.

In short, Southeastern and Crossrail services will be entirely segregated. This diagram shows the full proposed track layout.

I have the pdf of the planning documents if you want me to mail you a copy showing what they plan to do including what they plan to do with the station.

Although if you email Crossrail they will sent you out A3 verison (I got all the Central London staions and Heathrow sent out to me).

Edit: Forgot to say they are building a new station at Abbey wood