Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 3
Confusion; Troubleshooting; Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Provided Assistance
ATC Equipment / Nav Facility / Buildings
Approximately five minutes prior to the event occurring; I relieved the previous controller in which a position relief briefing was given.  The previous controller had Aircraft X on a vector to follow Aircraft Y into CLT due to WX and winds being more favorable for Aircraft Y to be ahead of Aircraft X.  The previous controller stated that Aircraft Y was proceeding direct; however it was not made clear if Aircraft Y was proceeding direct CTF or BOOZE intersection; which is 5NM west of CTF on the arrival.  CLT is hosted by ZTL; and there are known interface issues between ZJX and CLT transitional aircraft.  Due to these issues; ZJX is unable to amend flight plans on the HUSTN or CTF arrivals into CLT.  Because ZJX is unable to amend the flight plans; when aircraft are cleared direct these fixes on the STARS; the updated routes are not input to the NAS.  Once I observed Aircraft X 5NM behind Aircraft Y; I cleared Aircraft X direct BOOZE.  At this time both aircraft were within 20NM of BOOZE and descending to 110.  I then observed compression between Aircraft Y and Aircraft X and instructed Aircraft X to reduce to 250KTS.  Once the speed restriction was issued; I also noticed Aircraft X was on more of a course direct CTF rather than BOOZE; which I thought Aircraft Y was proceeding to.  I then cleared Aircraft Y direct BOOZE and Aircraft X a vector 20 degrees right of course.  At this point; separation was lost.  Once I gained lateral separation; I cleared Aircraft X back direct BOOZE.Route amendments should be allowed on aircraft transitioning from ZJX to CLT airspace; and all information should be relayed in relief briefings.
ZJX Controller reports of automation that does not work well and causes confusion with controllers if aircraft are or are not direct certain fixes.