Solution : https://service.sap.com/sap/support/notes/1153291 (SAP Service marketplace login required)
Key words : 
source code corrections, prerequisites corrections, system displays, date shifts, internal dates, solution implement, comparison, intentional, internally
Related Notes : 
       
| 1065366 | /SAPAPO/OM_LC_UPGRADE_51: Problems during the upgrade | 
| 932837 | /SAPAPO/OM_LC_UPGRADE_50: Problems during upgrade |