But even after the Mu-zha Line opened, contract disputes continued between -DORTS and -Matra. Shortly thereafter, -Matra suddenly announced that they were pulling out of the Tai-pei MRT project, and would halt all system upgrading and maintenance tasks.
木柵線營運後，捷運局與馬特拉的合約糾紛仍持續延燒，由於雙方對木柵線的工程驗收，以及是否展延履約保證金的效期並無共識，馬特拉不久後就悍然宣布撤離台北捷運，並停止辦理工程改善及系統維護的一切作業。