Original sentence: Although, later on in the series, he was said to have gone to  pick up a pack of cigarettes.It is shown in many episodes that Nelson's father abandoned him and his mother at an early age when he "went to pick up some Poptarts"
Edited sentence: It is shown in many episodes that Nelson's father abandoned him and his mother at an early age when he "went to pick up some Poptarts" although, later on in the series, he was said to have gone to  pick up a pack of cigarettes