No, f-ojac, that is not the reason. There is something wrong with svn in flightgear, that it does not update airports that are already visited.
About a week before the buildings at LFLL were added, i had changed to the new server. At the same time i had started a fresh terrasync directory, just to be sure to get no conflicts with "old" data. Any airport i visited since then, and that later got new objects, would not show me the objects. Only when i throw away my current terrasync data (make the airports unvisited), i receive the new objects.
At LFLL several people that *are on the new server* had to start a new terrasync directory to get the new objects visible.
A fix is really necessary, because we can not expect people to throw away their terrasync data each time they want to receive new objects on airports they already visited before.
Btw, This non-updating behaviour is in 3.4 and 3.6.
Kind regards, Vincent