Israel has only one reason not to accede to the U.N. Security Council resolution condemning the deportation order against 12 Palestinians and requesting its revocation. Israel does not wish to be seen to back down under pressure from the U.S. and the U.N., who are doing what Arabs bid. That would be a good enough reason, were Israel in the right. But Israel is in the wrong in deporting 12 Palestinians who have records of civil unrest. Which leaves Israel no good reason to spurn the U.N. request.
If Israel can find the murderers of an Israeli settler in Gaza, it should try them. But in the absence of that, deporting a dozen Palestinians, who have at some time made trouble of some sort for occupying authorities, does no good. It does harm.
This is not, admittedly, the worst punishment in the world. That's why Israelis don't give moral credence to U.N. condemnations of deportations when execution, torture and imprisonment elsewhere fail to command U.N. attention. But Israel is punishing people who had nothing to do with the crime. Just to appease hawkish Israeli settlers whom the government should not appease.