Hello everybody here is KATL with GSX 2 jetways plus parking positions as best as I could.
Just turn off ImagineSim_KATL3_PD4_Stands.xml in ProgramData\12bPilot\SODE\xml\ (remember to make a backup of the file).
Then copy the file attached in \AppData\Roaming\Virtuali\GSX\
Enjoy.