Yes! it is possible! I only found this out by pure chance and thought I would share It with you all, in the hope you have the same joy 🙂
Granted I have only tested this on ghost plant (Graptopetalum paraguayense ) and they are prolific little rooters anyway. I was still shocked to find that gently removing the baby from the mother leaf left a good clean break, so I placed mum back in the dish and waited to see if anything would happen and it did 🙂 new babies growing just as well as the first set.
Removing the baby plant from the mother leaf can be quite a delicate operation, you cold gently cut away the baby but this never feels right to me so I hold the baby between my fingers and gently rock the mother leaf back and forth as you would taking a leaf cutting, slowly and gently it will come away from the baby and you should have a nice clean break.
I should point out that I have only done so with leaves that are still plump and reasonably healthy looking, ones that have been sapped of all life creating babies would not work.
Within a week new life has started to emerge from the mother leaf again!
Please give this a try, you have nothing to lose and a new plant to gain, let me know how you get on 🙂