I'm sorry - I was pretty tired when I read the message last night and switched "Smart Button" with "Link Point" in my mind. I think it was because you said "Link Button" instead of "Link Point", which my mind auto-corrected to "Smart Button". You are correct - you cannot move link points right now. I'll consider adding an option in the future to move them. I don't know if I prefer supporting long press for that or requiring a selection in the window.
Mike
Mike