With the technique set out in this thread I've freed several stuck ports on my space station, but unfortunately there are a couple that stubbornly refuse to undock. I used the "disable crossfeed" method to identify the problem ports, but then when I used to dockUid to identify those ports they were connected to, I found that in there was no "attN = None" line to change to "attN = top" with the appropriate parent number. I tried adding the "attN = top" line but this did nothing for me. If anyone has to the time to take a look the quicksave file is here https://www.dropbox.com/s/dsg215xk8az6cj5/quicksave.sfs?dl=0 For anyone who can take a look, my returning Eeloo ship's crew, stuck in high Kerbin orbit waiting for refuelling thanks you