In general, you don't want to transfer weight onto the front foot when punching; it makes you very vulnerable and decreases you mobility for avoiding what comes at you next.
This is especially important when you MISS (as Fran was pointing out) because then the tendency is even stronger to transfer weight there even more strongly (since there is not contact to help you stop the motion) and thus makes the problem worse for misses.
--
HerbM
Bookmarks