FYI, My agent called the immigration and told me there is no need to do it each time I am traveling as I have a 1 year lease.

“It’s only necessary for the teachers from international schools that when they come back they have to re do every times for thire are repost to the government.”

“But normal working is fine as immigration will check on the last date in TM30 and lease agreement if it is the same, than you are safe. :)”