Is it possible to add extra data to a already existing qvd-file?
You can do a partial reload adding new fields to an already loaded table, then store the table (with this new records into the qvd file.
Table: ADD LOAD Field1, Field2 FROM FILE2.QVD (QVD); STORE Table INTO FILE1.QVD;
Miguel I get only the extra sales data in de qvd-file
You need to add the ADD keyword to your load, use the same name than the table previously created and store, and perform a partial reload (File, Partial Reload (Ctrl + Shift + R)).
Otherwise only the latter will be saved overwritting the existing data.
afaik this is not possible, as the qvd is a proprietary, binary format.Adding data means "load qvd -> append data -> store as qvd".
Retrieving data ...