What is up with the merge function? Is this broken?

[Lunar Sea]

Merge craft does not merge. 

Well actually I do think I got it to work once or twice. Had to fart around with the root selection on the craft I was bringing in to merge if I recall. But it would be nice to know how to get it to merge correctly (and not be totally faded out) every time. 

[Gaarst]

Merge function is basically a subassembly at the wrong place. To properly attach the "merged" craft you have to have a free node on its root part.

Otherwise, you can load (Merge) it, place it anywhere in the VAB, and while it is in "transparency" shift + left click to select only a part of it.

Edited May 20, 2016 by Gaarst
Clarity

[wrobel-cwirek]

So do you mean that both crafts (the one loaded using "Load" and the one loaded using "Merge") must have green attachat point on their root parts? So you can only attached this crafts with their roots parts? That's just bit counter-intuitive. I will have to give it a try.

[Gaarst]

14 minutes ago, wrobel-cwirek said:

So do you mean that both crafts (the one loaded using "Load" and the one loaded using "Merge") must have green attachat point on their root parts? So you can only attached this crafts with their roots parts? That's just bit counter-intuitive. I will have to give it a try.

Only the one loaded using Merge must have a free node at its root part. Obviously you also need a node on the Load craft if you want to attach the Merge craft, but it can be anywhere, and surface attachement also works.