Does chunk destroyer not transfer fluids to the AE2 interface? I thought it was possible because it worked in 1.20.1.

Minecraft 1.12.2
AE2UEL 0.56.5
AE2 Fluid Crafting 2.6.6
Quarry plus 12.5.7

AE2 in 1.12 doesn't support Fluids natively, so no APIs are provided, I think. Not to insert directly, use some buffers.