Hi Doreen,
Glad to hear DBXL is up and running.
When a form is submitted via the DBXL Document Service (SubmitDocument), a set of processing instructions (PIs) are inserted into the XML form.
If the form is later reopened, modified and resubmitted, this will (or at least should) overwrite the same existing form.
So there are essentially two scenarios:
1. New form -> no DBXL PI -> submits new data
2. Existing form -> DBXL PI exists -> overwrites
I'm a little surprised that this is not what you're currently experiencing. Can you describe what you're seeing? You can keep an eye on the Documents tab in DAT as well to see whether a new DocID is added or an existing one overwrtten when you resubmit.
Thanks.