I can't get KAS winch to work. I've attached 2 vessels in docking mode but fuel transfer is still disabled http://imgur.com/a/xokk6. Electric charge transfer works. I've tried to do the same with pipe and it still doesn't work http://imgur.com/a/cnRMK. What can be wrong here?
With disabled crossfeed restrictions in difficulty settings fuel transfer works in any configurations (wire only, pipe only, through pylon)
I'm playing KSP 1.2 on moderate difficulty.