I uploaded a revised version of my main WorldConnect file this morning, went to check it a bit later and was perplexed to find that the additions that I expected to be there weren't showing up. I checked the GEDCOM file on my memory stick and it was the one I created last night with new data, so I logged in again and once more uploaded my file. This time I got a message I don't recall seeing before:

Upload complete. Saving files...
'Behra 2008.ged' already exist!
Renaming to 'Behra 20081.ged'.
'Behra 20081.ged' was saved successfully.
Transfer complete!

This time it did work -- additions all present. Question: why didn't the first upload (which the system apparently registered, given the message above) take?