Time to post my first question on Meta...
This question has two revisions, where the second one is only 5 minutes newer (9:13 vs. 9:18am). However, when I answered the question some hours later (2:00pm), I am absolutely sure that the first revision was displayed and there were only two other answers (mardavi and Matthew).
Some time later, I opened that question again and saw the edited question and also another answer (by Stefan Seidel), posted much earlier (9.58am).
This strikes me, especially in that case, as my answer does not fit very good to the revised questions... and Stefan Seidel had already a similar idea -- and even wrote a much better step-by-step guide. (Oh, and while writing that, s/b converted his up- in a downvote
:( as I was so keen to add a disclaimer that my answer applies only to the first image, i.e. the first revision. Probably I better had deleted it...)
Now there are two additional, identical entries in the revision history:
Post Merged (destination) from superuser.com/questions/593912/… occurred 3 hours ago
I suppose only since that time (2:30pm) the second revision was visible and also assume (from their answers) that mardavi and Matthew weren't aware of the changes neither.
So, finally my question: What does "Post Merged (destination)" mean and why was the second revision (and the first answer) not visible to all right from 9:18am on?