Was the shoe erased in cleanup? Or were the Battle scenes recomposited at some point and the shoe omitted?
Most, if not all, of the effects shots were recomposited for the Special Edition. This allowed them to fix problems like TIE fighters appearing out of nowhere or transparent spaceship parts (and many more) but also lead to problems like omitting flying shoes
Not for ROTJ. Not a lot of the shots were recomposited. The TIEs still appear out of nowhere. The shot with the shoe was the famous one where the TIEs go through the Falcon, so this was recomposited. But most of the shots in ROTJ were left alone