No matter how closely you align the segments with the Bing Aerials, they will tend to shift over a period of time. The best solution would be to use the WME GPS Layer as far as possible, while correcting the Geometry of these misaligned segments. Note that Dark Green Arrows show the strongest fix obtained by satellites, and Red the weakest.
You might ask "What about Segments where there are no GPS Points?" When you do not have GPS Points to align by, use Bing Aerials.
I've looked at the Map of Delhi and have noticed that the offset of Bing Aerials and Waze Segments is substantial. The main reason being this that no Wazer has worked extensively on the maps of New Delhi till date. But we are changing all that. Aren't we ?