Solution : https://service.sap.com/sap/support/notes/693232 (SAP Service marketplace login required)
Key words :
prerequisites sp2 solution install sp2 patch 2after, text properties, text property, property editor, property changing, original locale, language & country, existing translations, retain consistency, description
Related Notes :
778884 | Central Note for the Portal Content Translation |
751287 | EP 6.0 SP2: Portal Content Translation available |