Saving a Video

I have just edited a 4 min long video and I have more then 40 clips over there (split videos). When I saved the video I have noticed that every clip has lost the first and last couple of miliseconds of video. This could be very distinctly noticeable if you are listening to the audio of the saved video. If you are listening or watching the video on movie maker timeline it remains ok. But the problem arises when I save it.  I have not used any animation or visual effect for any clips. I have used recommended setting for this project while saving.  I am using Windows 10 and Windows movie maker 2012. I have spent so much time to finish the video now feeling so disappointed. 

Thanks in advance for your help.