Our club weather station was set up in February 2006, but we didn’t join the Weather Underground (Station ID IENGLAND172) until June 2008. I would like to upload archived data for 2006, 2007 and the first 6 months of 2008 from VWS (v14 p31) to Wunderground, so 'completing' the station history. As far as I can see, selecting Upload Archived Data on the Wunderground settings screen in VWS only uploads the current archive file. The VWS Data folder contains four files named 20xxDbase.csv, one for each of the years 2006—2009, with records at 30 min intervals, which is the interval I have scheduled for Wunderground uploads. Am I right in assuming that what I need to do is upload those 2006, 2007 and 2008 csv files? If so, exactly how do I do it (I certainly don’t want to trash the existing station history in the process)?