Solution : https://service.sap.com/sap/support/notes/826837 (SAP Service marketplace login required)
Key words : 
patch level 55sap gui 640, front end correction, terms btf editor, patch level 10, sap gui 620, btf editor, change status, correctly recognized, query reason, problem occurs
Related Notes : 
       
| 96885 | Downloading front end patches |