So I found out the Bob fluid burner furnace has the same internal name as the fluid furnace of Mine Liquid Ores. The way this mod is made makes it add the fluid furnace after Bob add it's own I think? So it could explain why only the Bob fluid furnace is there, and the Mine Liquid Ores one is missing.
I will have to rename internally the fluid furnace to make it compatible with Bob's Assembling machines, and a migration script to not break existing maps.
I think I'll rename it the cooling machine, or something like that. After all, it's more that than a furnace. It's a casting machine for plates.