Solution : https://service.sap.com/sap/support/notes/210783 (SAP Service marketplace login required)
Key words : 
consulting lo-vc development, replacing w-items, incorrect object dependencies, additional key words, internal tables, wrong characteristics, prerequisites caution, 'corrections' section, inconsistencies
Related Notes : 
       
| 323940 | Valuation when creating with template is lost | 
| 199575 | Replacement of a W-item |