I've look and failed to see it mentioned...maybe I didn't look hard enough. I think I found a bug. A kerbal pulls MonoPropellant out of the vessel when he goes on EVA, instead of just however much he needs (default 20U), the entire tank is emptied. The kerbals EVA tank is put back, whatever he didn't use, but still considerably less than what it's supposed to be. Ex. If I have 60U of MonoP in the tank, a Kerbal then takes 20U with him, well he is full at 20U. Going back to the vessel he came from...that 60U tank is now completely empty, so when the Kerbal comes back...whatever he didn't use does go back, but the tank is 40U short after it was emptied. Not good! I'm using .23KSP, This (v 1.0.15), with a bunch of other mods, I'm going to go back and test with JUST KSP and verify if it's this ECLSS or if it's this in combination with something else. Confirmed...with JUST KSP, ECLSS, & MM 1.5 a 60U MonoP tank empties when a Kerbal goes EVA, even though the Kerbal only has 20U on him.