I am new to Nintex. We tried to use the Nintex, however we found that the action is limited.
For Copy Document action, the Item and Destination Library is both document library ,so we can not get/add attachment document to the list library as the attachment.
There is no Copy Item action ,so it is impossible to copy item from one share point list then create it on other list. For Create List Item, only Required columns need to be written, the attachment column can not be copied and created.