What happened in RDC's arbitration against Guatemala over the railway (CAFTA case)?

In March 2007 Railroad Development Corporation (RDC) served notice of intent to arbitrate against Guatemala under Chapter 10 of DR-CAFTA,… following the declaration that the Ferrovías railway usufruct was contrary to the public interest (lesividad). Guatemala was held liable in the award (RDC v. Guatemala, ICSID, 2012) and the Attorney General's Office (PGN) later reached a settlement with the Ferrovías/RDC entities. The amount of the award and the terms of the settlement were not verified on this pass. It is a relevant precedent on declarations of lesividad affecting contracts with foreign investors.