I am using RegCM 4.7 along with CLM4.5 and found some peculiarity with the CLM4.5 input file DOM1_CLM45_surface.nc created with mksurfdata. In the file created by the 4.7 version (by looking at urb_2d) there is a very limited urban landcover and only large cities are represented, everything else is lost. I am sending the corresponding printscreen of the 4.6.1 CLM4.5 urb_2d too
(left panel - 4.7.0, right panel - 4.6.1), which looks as it should. Just to note that the configuration is same for both namelists (just using the corresponding namelist version which brings some minor differences). 

I noticed that there has been a lot of changes in the PreProc/CLM45/mksurfdata.F90 between 4.6 and 4.7. However it seems that in 4.7, something is wrong as the results does not seem right.

Any suggestion where might be the problem? 

Thanks a lot!

Peter