It could be only one reason, that county wants him in court for something. It could be a new charge or he could be a material witness in another case.
https://www.inmateaid.com/ask-the-inmate/what-r-the-reasons-a-sentenced-inmate-previously-located-at-hays-state-prison-serving-a-life-sentence-be-moved-back-to-fayetteville-county-ga-jail-nbsp#answer
Accepted Answer Date Created: June 27,2019