Karen is correct. There is a 1:1 relationship between a Story and a given Defect. The Defect can be moved from one Story to another, but it can only have one Story relationship at at a time.
Hi Neel, everyone.
I have mostly internalised the Rally position that a Defect can only ever be the child of one User Story.I won't say we never want them to be linked to more, but I think those times are where we're trying to make the User Story item do something beyond what it's intended for in its simplest form. And we do that quite a lot, one way or another!
Another horrible way to tie everything together might be to artificially make multiple copies of the Defect and link them all together as Duplicates.But I would probably still prefer either Karen's or David's approaches.