Yes it is. It is not fare to have to modify files each time I use live update...
No, you don't. The Live Update recognizes the OrbX fixes and won't remove them.
Unless, of course, they changed the name of their fix or added new files to it. The Live Update will not remove a file named cvx_FTX-SCA_FSDT-KLAS_compatibility.BGL in the KLAS\scenery folder, which always worked so far.