it will get lifted. If not FIFA, CAS will. It's inevitable.
"The club acted in accordance with the relevant regulations and has already notified FIFA of its intention to appeal against the Disciplinary Committee’s decision and sanction. As a matter of procedural fairness and equality of treatment, and Swiss law, the Club’s right to an appeal process must be afforded, before any irremediable sanction takes effect.
So far as the Club is aware, in all previous cases where a registration ban has been imposed by FIFA, a decision has also been made to suspend the sanction until the appeal process has been completed. In this case, Chelsea considers that it is being treated inconsistently in comparison with other European clubs." CAS are lifing that, how can they possibly not?
The bolded part is literally the money shot.
Some people claim FIFA have broken the Swiss Law. They've set a precedent by allowing Madrid and Barca to register whilst an appeal is heard, any attempt to suddenly change the rules because it isn't one of their "golden boys" will get thrown out.
IIRC i think it was CAS which lifted Atletico's ban