Solution : https://service.sap.com/sap/support/notes/351282 (SAP Service marketplace login required)
Key words : 
co_co_order_copyco_copy_caufv_afpoco_bc_components_copyimport parameter   reference field  default valuei_flg_keep_cuobj  rc27x-flg_sel    ' '             optional, prerequisites solution add import parameter i_flg_keep_cuobj, sales order process, leading configurable object, additional key words, function modules, assemblies, transferred
Related Notes : 
       
| 525853 | Creating network with template: Copying configuration | 
| 353370 | OCM:different homogeneity objects in collect.order? |