When I entered through KLIA, I wasn't asked about currency. The only customs/immigration questions were agriculture and health quarantine related. There were

When I entered through KLIA, I wasn't asked about currency. The only customs/immigration questions were agriculture and health quarantine related. There were no further customs checkpoints either. They did take my fingerprints though. No questions about how much liquor you are bringing in or anything. Exiting was more interesting. There they ask you to declare money you are taking out of the country and they don't let you take very much out. Moreover they will only let you buy up to 2 L of liquor duty free because of Malaysian customs. And yes, they take your fingerprints again. Maybe the rail crossings are different?