Nothing in this Charter contained, except as specifically provided, shall affect or impair the rights or privileges of officers or employees of the City or of any office, department or agency existing at the time when this Charter shall take effect, or any provision of law in force at the time when this Charter shall take effect and not inconsistent with the provisions of this Charter, in relation to the personnel, appointment, ranks, grades, tenure of office, promotion, removal, pension, and retirement rights, civil rights or any other rights or privileges of officers or employees of the City or any office, department or agency thereof.