Actually we are having the same issue but to a greater degree.
We just upgraded to 2014 (acad and C3D) from 2011. All of the old sheet sets will not allow us to change settings in them such as page setup overrides, we can not add or move sheets around. We thought that it was the SMB2 server setting but we switched it back to SMB1 and are still having issues.
Any ideas on this or will 2014 not use older sheet sets?