when I built this set up:
the sweeping of oxylite to the conveyor loader worked fine.
When reloading the game, the autosweeper stopped working, leaving the oxylite on the ground, forcing dupes to manually send instead.
quitting the game and reloading did not solve the issue
deconstructing and reconstructing the autosweeper did resolve the issue
subsequent reloads have not replicated the issue - auto sweeper has behaved as expected since, maybe 4-5 sessions since the initial issue.
MBP 2017 15in
2.8ghz quad core intel core i7
16 gb 2133 MHz LPDDR3
Intel HD graphics 630 1536 MB