I’d like to merge with Intellij IDEA (11.1.3) via the menu ‘VCS -> Git -> Merge Changes’. But the desired branch (mergeRequest15) is missing. But why? Is it because it seems that this branch bases on another branch (mergeRequest14)?
gitk –all shows:

IDEA shows:

This is because the branch mergeRequest15 was already merged to master (you can see that in the history). Thus there is no need to merge.