If you move files on Linux with command mv, time-stamp won't be change, But if you copy with command cp, it'll take current time for time-stamp. If we wanna get original time-stamp, you can use following command on Linux,
cp -R -u -p /source /destination
What is time-stamp ?
When we create or modify file / directory, it'll store creation and / or modification date and time on file / directory properties. Which is called time-stamp.