Solution : https://service.sap.com/sap/support/notes/684448 (SAP Service marketplace login required)
Key words :
symptom entry attribute overwrites, terms entry hrnl solution, apply sp5 patch3 hotfix 3, sp6 patch1, attributes
Related Notes :
673279 | Central Note for EP 5.0 SP 5 Patch 3 Hotfixes |