Describe the Suggestion

Currently, the "Fluid Cargo Condition" in a train schedule requires a fluid to be put in the filter slot for it to work. The suggestion is making it where if no fluid is in the filter slot, the train will look for any fluid. Because of this, you must configure every fluid that a train will pick up to be able to empty the train of multiple types of fluid. If there is a way to do this already using the fluid cargo condition, please comment about it.

Screenshots and Videos

N/A

Additional Context

N/A