Hi @aemstarternewbie
Which version of AEM are you using ? If you are using AEM as Cloud, there is no concept of Reverse Replication. In Cloud the content is moved from Author to Pulish using Sling Content Distribution. So if you are using Cloud , this is not possible.
But any other version , may be you can check the possibility of a custom code to acheive it. But I am really curious why you have to do this in the first place. Why should you give an end user the capability to change any fragment data ? I do not think that is a right approach with regards to CF.
Thanks
Veena ✌