Curing is for two things, is it not? One, to give time for complete saponification and, two, for the moisture to evaporate and all the chemical stuff to happen. If you're rebatching an already cured soap, yes, you need time to allow all the added moisture (in my case, about two oz. of goat milk soap) to evaporate but the soap itself is already soap.
My husband is so not for rebatching. His attitude is that if I do it right the first time, there should be no need for rebatching. Thanks dear, that's so helpful when you have two batches out of 40+ that didn't quite turn out the way you expected.