With the HP ALM REST Connector you can synchronize data between ARD 2.5 and ALM 12.x. From the REST connector pane, you can update data from ALM to ARD and vice-versa thanks to the Sync button.
In the Sync window, I can only sync data for the Test Case (ALM) corresponding to the Stored Path level (ARD) although that I configured the objects mapping for the Design Step (ALM) linked to the Block (ARD)
Why the Sync window does not allow me to do the same operation for the Block level ?
Below 2 screenshots.