This question was migrated from SO to dba.se a short time ago, and a user on our site asked if his 'favorite' star would come over with the migraton.

It turns out it didn't - but it seems to me it wouldn't be a bad thing if it did, especially (but perhaps not only) if:

  • the user is registered on both sites
  • the migration happened soon after the question was favorited
  • the question isn't closed on the target site

Is there a good reason why this does not happen?

  • I'm guessing it's because there's no guarantee the user exists on the target site and there'd be nobody to link the favorite to, combined with the low payoff (nobody asked)...
    – JNK
    Commented Aug 28, 2012 at 20:18
  • I wonder how expensive it would be to check if a question was starred 300+ times (can happen in cases of old questions, and we do on occasion migrate them to a new site if there's a compelling reason and coordination). Presumably, nobody thought of it, or doing it was ruled out because of logistics. Migrations used to be extremely fragile, but bugs related to that have not surfaced lately. Curious to see the dev take on this.
    – user50049
    Commented Aug 29, 2012 at 5:06

1 Answer 1


There are arguments for both sides, so I think it is best to sum them up without giving a final yes or no.

Reasons to migrate the favorite:

  • it is odd to have a favorite on site A while the question actually resides on site B (migration target);
  • any others? Not that I am aware of.

Reasons to keep the favorite on the site it originally was favorited:

  • the user favorited it there, so usually a user will get back to find it;
  • migration might get rejected, so moving favorites could end up useless;
  • a user doesn't have to be a regular on the target site, or check his user profile regularly there.

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