I have to say, these warnings are byond any logic I can comprehend. It it not like Hamas does not get these warnings. Obviously they moved aswell. Then again, was this intended by Israel? So in the end nobody can trust these warnings. They are pointless.
Yes I dunno what the term is but it's common to telegraph ops like this. US did the same in Yemen and they see a) civvies moving away from munitions storage areas b) terrorists trying to move munitions to safety. It can inform of new targets