Barcar - below is the answer to your question from TfL. I hope this clarifies things - although you are going to be disappointed that you will not be able to transfer your existing paper season "station to station only" tickets to Oystercard. Obviously, when your existing season ticket expires you will be able to buy a new season Oystercard tailored to your requirements:


"The extension of Oyster pay as you go to National Rail services in London will not change the products that can be held on an Oystercard so unfortunately passengers with a paper National Rail point to point season ticket will not be able to transfer it onto an Oystercard. It is only Travelcards (i.e. that involve travel on TfL services - e.g. Tube, Bus, Tram, DLR, London Overground) and pay as you go credit that can be loaded on an Oystercard.

Should National Rail customers wish to switch from paper Travelcard season tickets to Oyster Travelcard season tickets, I would imagine that the only feasible way is to surrender the existing one for refund to your National Rail station and buy a new Travelcard on Oyster. This may come with a cost so depending on the validity of the ticket, it may be better to wait until it has expired. However you would need to check at your local National Rail station."