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Depends on the state of your current walls.
The plaster in my house is really old, if fixing/repairing I either just chuck a load of bonding on then paper over, or use either multi finish or easifill and plaster up to paper (if a small patch repair). Sanding blocks make short work of any mismatched edges. Try and avoid getting the lining paper damp as it can lift. Paint colour and light can also end up hiding stuff you think you might be able to see.
Our new place is lined with lining paper. When we fit new windows the reveals will have to be replastered and patched in. Might also be some chasing etc needing filled in.
Do we need to strip all the lining paper and start again, or can plaster play nicely with the edge of paper?