I'm having this situation where I need to import around 300 products with different attributes and 4-8 pictures for every products. I have created a valid csv file, within my ERP program (accounting software, which use MSSQL as database). As I said csv file which is created from my locale software is 100% valid and the importation is working just fine. All the attributes and pictures are in it's place.
Now i encountered to another problem, which I don't know how to solve. I have used the function "Replace Existing Complex Data" when import, but this function deletes all the existing data (products which I manually added to for example "Featured" or "Our suggestion" category).
So I tried to fix this with the "Append Complex Data", but this function is not working for me because it duplicates the pictures (append the pictures).
The best scenario would be if it is there a function just to update the complex data, not to replace, not to append.
Could this be done, by setting up that the Magento doesn't apply the import changes for the specific category?