I've found that many of the corrections to street names I discovered as I put together the San Francisco 49-mile Scenic Drive route went away as soon as I updated to the version 720 maps. I've restored some of them, and have made many more corrections since that I have low confidence are going to come through in MapShare or a future map release. The next time I do a map update (which will probably be v8 maps) how do I not re-enter all of my MapShare corrections?