[osmosis-dev] Latest osc change file returns empty xml.

[Dave F]

Hi
Is the following expected behaviour, if so I'm misunderstanding something:

I followed the instructions here to obtain the latest diff file for 
Great Britain from Geofabrik:
obtain the latest diff file:
https://wiki.openstreetmap.org/wiki/Planet.osm/diffs#Using_Osmosis

I'm using osmosis --rri workingDirectory=. --wxc GB.osc.gz
I amended configuration.txt to point to the GB folder:
baseUrl=http://download.geofabrik.de/europe/great-britain-updates

Running the command it completed it's task, but the osc file contained 
an empty xml file:

<?xml version='1.0' encoding='UTF-8'?>
<osmChange version="0.6" generator="Osmosis 0.48.3">
</osmChange>

If I amended the state.txt file from 
http://download.geofabrik.de/europe/great-britain-updates/000/002/ to a 
previous date it obtains the diff data as expected. It's only with the 
latest version that the problem occurs. What am I not comprehending?

On other Q:
As the update interval for Geofabrik is 24 hours, should I amend this 
value in the configuration.txt file to suit:
maxInterval = 3600

Cheers
DaveF