We had another debateable migration: Password security in databases - today still best practice?
That question got migrated from StackOverflow. At the time it was migrated, it already had multiple answers, some of them with many votes. Unfortunately, some of the highly-voted answers have advice of debateable merit. This is not ideal, because StackOverflow has many more voters than IT Security does, and it means our community is outvoted by folks who aren't even a member of our community. This makes it infeasible for our community to take responsibility for the accuracy of the page for others who may find it on our site in the future, which is an unfortunate side effect of migration.
Also problematic about this migration is that similar questions have been asked before on this site and have been answered in depth. The migrated question is basically a duplicate. Unfortunately the poster of this question and some of the answerers seem to be unaware of the state of the art or the good material that is already available on this site about this topic.
Of course there will always be situations where we have inaccurate, low-quality, or duplicative questions and answers on our site, but I think we should try to avoid the avoidable ones. (And I should say I have no beef with migration in general; I think it's great that moderators looking out for questions that might be better-suited to our site. I would just prefer that they followed our criteria before migrating.)
I have written before about bad migrations of this sort, but the recurrence suggests to me we don't yet have this licked. Do others agree that this is undesirable? If they do, what can we do to prevent repeat occurrences?
P.S. My goal is not to call out people for blame, but rather to ask for constructive suggestions about how we can maximize the quality of this site going forward.