Definitly European Tour 73 , Billy Preston organ sounds ,so this isnt the right version.
I dont think Billy Preston was at the LA Nicaraguan benefit concert,cause he start touring with the Stones in Europe 73.
You Can see Stu on piano.
Paste from Zentgraff
730118B 18th January: Los Angeles, California, unidentified place
MJ, KR, Billy Preston and Gar