Hi,
It seems you've added historical railways that have been erased completely. OSM is a map of the present, not a historical map.

If traces are left, an historical railway can be mapped, but the line towards to old Aalsmeer station don't exist anymore. There are houses now. 

See also https://community.openstreetmap.org/t/niet-meer-bestaande-railways-mappen/122686/24