Import invoice with more than 1 item

Import invoice with more than 1 item

My customer imports about 70 invoices every month. Since yesterday only the first item of the csv-file is imported.

I have tested also the tsv-format with the sample file that can be downloaded at the import screen and I get the same result:

Only 1 item is imported.

Please help - this is really urgent!!!

Thanks in advance!

Martin Leisch