I am trying to upload 100 products at once with custom attributes from backend.

First I have downloaded some products I created with custom attributes to know how can I create csv.

Now I have the correct csv and when I check data, all is correct.

The problem is when I import from there, only import 33 products without custom attributes however I have tested with 3 or 4 products and it does function very well.

I have tried with magmi using Custom Options,the magmi problem is my products dont have the same custom atributes, the header ( colum name) changes according it.

http://wiki.magmi.org/index.php?title=Custom_Options

I have done all csv according magento export file and if i want to use magmi I must to change each row or Does exist another way to do that using magmi without to change my csv files ?

I hope your help. Thank you in advance

PD: My magento version is 1.9.3.6