There have been numerous times when I've read the phrase "Live in the moment" but today I got a question in a quiz wrong according to which "Live for the moment" is the correct usage.
Then I checked online and found Live for the moment is a phrase while I can't find live in the moment defined anywhere (in known and reliable dictionaries).
My question is, have people been using the phrase "live in the moment" incorrectly from a long time?
EDIT: Yes, I know use of "live in the moment" is not uncommon. But why is it I cannot find it in any known and reliable dictionaries? I even got a question wrong in quiz...