Is there a possibility in the near future provide a SQL Server Compact 4.0 DB to synchronize with SQL Server, unfortunately, offers some of the SyncFramework for this version at no SyncCeProvider .... and the opportunity to work with a local cache async one is also forbidden, because it is supported only in version 3.5.

Unfortunately, I am clueless and if needed an alternative offered by the DB once support for the Entity Framework and the Local Cache Agent.

The version of SQL Compact 3.5 would work but unfortunately I have the problem that the auto-increment columns are not generated ..... too bad someone has an alternative suggestion?