Ah, this one is trued already. You cannot transfer "darts" that are filled. Only open darts can be transferred! Our mistake is that it still looks like you could...
...but we will have a look at that. Maybe I will try to magically make something like this work, but it's asking a lot, actually! One question would be "should the truing (the cap) be transferred as well and should it remember the direction in which it was trued"? Maybe I could simply try to remove the truing myself and then let you transfer it as usual?
Anyway, there are various ways you can go about it.
Oli's standard solution would be simply to extract again without the truing.
My solution would be to:
• grab the tip of the truing cap with Move Point and move it to the apex of the dart. In your case that would be very simple, because it's only lines.
• then do a box select around the apex to select all lines of the dart including the markings that are still there. Then go to "Markings" and choose "Remove". This way only the markings will get removed and you're left with the pure dart.
• Now you can resume transferring your dart as you like!
So, yeah, nothing has changed, all is still well, but we've left the impression that something was possible, which had never been possible: Transferring trued darts by their markings. But it would make an awesome feature!
Let me know, if this helped you already, please! Otherwise I will make a little video for you, of course!