Is there a way to preserve the old navigation database still present in the general release FS4? Can 2 copies of the sim be loaded and one frozen out of updates as an example or can some database file be copied and substituted at will?
I want to use the old systems with a reasonable number of NDBs and some of the current approaches look uninteresting, Livermore KLVA for example has lost its locator NDB LV 374.00 and the VOR ECA 116.00 is gone.
I have copies of lots of old navigation material more compatible with the present (old) database.