ok thanks Helen, I think I got a little bit closer to solving my problem. When I have created a file on server01 and modified the synced file on server02, the file inherits the security from the hidden .sync folder. So if there are a lot of subfolders with different permisssions it wont matter because the synced file only looks on the security on the .sync folder. I found this KB on the problem with file permissions: https://support.microsoft.com/en-us/kb/310316
" You can modify how Windows Explorer handles permissions when objects are copied or moved to another NTFS volume. When you copy or move an object to another volume, the object inherits the permissions of its new folder. However, if you want to modify this behavior to preserve the original permissions, modify the registry as follows. Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
Click Start, click Run, type regedit in the Open box, and then press ENTER.
Locate and then click the following registry key:
On the Edit menu, click Add Value, and then add the following registry value:
Value name: ForceCopyAclwithFile
Data type: DWORD
Value data: 1
Exit Registry Editor."