A couple of things that may help.
- Turn on logging / debugging and you can see the activity with google
on the data upload. I typically see 80 to 90 records of the 100
processed for each 10 minute interval.
- there is a SQLite addin for firefox that works well to extract the
data from the database. It doesn't upload the data to google but you
can look to see what it has collected. Also there is a queue table
that shows the transmissions to Google but I'm not sure what to tell
you to look for in the queue table. If you really want to get the data
back into Google, there is an API document from Google that describes
what has to be done. It doesn't look easy but it is doable.