Regular Modern Dynamics Pipes, no upgrades. This time around tried transferring items from IR Chopper to a chest (But from previous occurring this has nothing to do with a container I'm pulling the resources from or to). After putting an extractor and tried to make them work, I realized that they cant pull out the items from the IR machines, so I broke them, after a minute or less. No drops were on the entire server. Anything that can be as an entity on the ground such as blocks or exp, just disappear if broken or dropped. From previous 2 times it happened this bug occurs after breaking the pipes without a correlation if they have something in them or no.