Since the version 2.2.2659 GN4 supports the 'product_code' parameter for the Back4 plan/edition import. Assuming that an edition template with the name equal to product code the edition template exists, Back4 process creates a new edition from the 'product_code' template, copying the masters and then adds all pages and/or ADS from XML.
The product_code parameter is ignored if:
1) Already exists the edition to import (masters and dimensions are already set).
2) The 'product_code' template doesn't exist.
3) The 'product_code' edition exists but it is not an edition template.