Hi Lenyx:

I am not an expert in this area but if the credit notes are entered as negative amounts with the same format as your your regular .IMP the import should work. If not post back!

Hope this helps!

Hi Agate! thank you for your answer.  My desire was to access the sales credit notes form by an import but i didn't find the solution. so your idea is a B plan that is also good. It create a negative invoice, the import goes to the invoice form instead of the sale credit note form. The result is the same so i will  go with that. Thank you 

I am glad it worked out for you. It was my pleasure!