I don't know if this is true or not but they say if you have a CDR and SS terminates your SSDI benefit after review, you can appeal their decision and continue your benefits uninterrupted. Now, here is the caveat. If you win your appeal, all is ok and you simply continue to receive monthly benefits. If you lose your appeal, you have to pay the money back which you might have already spent and can't really pay back. I hope no one ever ends up in a situation like this.