Complex sentence: ADMICARGA assigned the railroad to replace former the rail operator of the line, Carrizo Gorge Railway, creating some controversy over the non-transparent process which led to further investigation from CZRY officials with the State of Baja California Congress.
Split into simpler sentences: ADMICARGA assigned the railroad to replace former rail operators, Carrizo Gorge Railway. This sparked controversy over the non-transparent process, which led to further investigation from CZRY officials with the State of Baja California Congress.