Judgment of the General Court (First Chamber) of 14 December 2018.#GQ and Others v European Commission.#Civil Service – Officials – Reform of the Staff Regulations – Regulation (EU, Euratom) No 1023/2013 – Types of posts – Transitional rules for classification in a type of post – Article 31 of Annex XIII to the Staff Regulations – Assistant in transition – Promotion under Article 45 of the Staff Regulations allowed only within the career stream corresponding to the type of post occupied – Access to the type of post ‘senior assistant’ (AST 10) only in accordance with the procedure laid down in Article 4 and Article 29(1) of the Staff Regulations – Equal treatment – Loss of eligibility for promotion to grade AST 10 – Legitimate expectations.#Case T-525/16.