It depends on a few things, most notably the feelings surrounding that experience, both in the dream scape and in physical reality.

So, what is the feeling experienced when reliving that experience?

When you say 'momentary', do you mean, as in a quickly passing situation?
Or do you mean that although it was 'momentary' as in perhaps it was somewhat significant (or even very significant), but it was momentary whatever it was.

If it is indeed the latter, then it most likely means that there are issues around that topic that you are holding on to, or at leads need some attending to. It doesn't have to necessarily be negative - it could simply be your inner guidance trying to get you to move in a certain direction that you may not have done up until the present moment.

~pmk