First, if possible at all, don't go there!
Second, if you really want to go, you don't have to let go of property as long as it is rented, and you can keep the investments you have had, like RRSP, just can't add to it/them.
You do have to give up your Ohip and driver's license But trust me, you'd be better off in Qatar without Ohip or relying on it.

Best of luck.