Solution : https://service.sap.com/sap/support/notes/1155335 (SAP Service marketplace login required)
Key words : 
terms sap netweaver mobile 7, endless time period, mobile device, sync continues, data object, older version, syncbo reason, newer version, doe server, honored properly
Related Notes : 
       
| 1073391 | NetWeaver Mobile 7.10 Composite Note for SP02 |