There are, and many are somewhere along the line in the process of leaving. The departures are being tracked very accurately by Pr. David Barnhard at http://davidbarnhart.blogspot.com
About 300 congregations and clery have departed for the one-year old North American Lutheran Church www.thenalc.org.
A slightly larger number have departed for the ten year old Lutheran Congregations in Mission for Christ www.lcmc.net.
I am only aware of one ELCA to LCMS move, a congregation in the NYC suburbs served by a Pastor who had been Seminex/AELC.
My brothers ELCA congregation went to the lcmc last year. They did not go LCMS due to old bitterness over seminex. I hope those old wounds can be healed at some point.
Another reason congregations are not going LCMS is the presence of female clergy. I hope the LCMS does not give in on that one. I don’t think they will.