Note that there is a one hour time difference between Bulgaria and Macedonia.
(Skopje - Kumanovo -) Beljakovce MŽ - Gjueshevo BDŽ (- Sofia)
This route has been planned for many years - some construction work was done on the Macedonian side - On 14 July 2017 the European Union announced it would finance its construction with a Memorandum of Understanding that the line would be completed by 2025/2027.
In November 2018 the 34Km of line to the branch terminus at Gjushevo from Kyustendil (Bulgarian: Кюстендил) was only being served by two train pairs on WSSuO and practically the entire line subject to 20Km/h limit. There was definitely no signs of works on the Bulgarian side as the line stops a short distance beyond the station at the foot of a mountain through which presumably any putative extension is projected?