If a book has very different titles then we will copy over the recipe index rather than linking the editions. The drawback of this is that ratings, notes and reviews are not then shared across the editions. Made in India had the same basic title so we linked it. The easiest way to make sure you get the edition you own on your Bookshelf is to import the ISBN number (Import books is under the My Bookshelf tab). If the book is in the Library it gets added immediately to your Bookshelf. If we don't have it yet we import the data from Amazon and it goes into the Library and onto your Bookshelf. If Amazon doesn't have the book then we cannot add it.
You can see every linked edition for any indexed book - click the links icon on the book listing in the Library. Another way is to click the Details tab on the book details page, which you get to by clicking the book title. You can see the details page (and the +Bookshelf button) for any linked edition by clicking on the ISBN number.
If we have missed an edition being linked to the indexed book (this is most likely to happen if a new edition comes out after we have indexed the book) then please let us know and we will link it.