How can I get Network drive shortcuts added to the Finder sidebar in Mountain Lion? I updated to Mountain Lion from Lion and I noticed that my network drives are no longer shown in Finder's sidebar under Devices. 

Under preferences I have all checkboxes ticked. And when I click on "My MacBook Pro" I see the Network drives mounted but when I drag them to Devices (like I used to in Lion) they don't "stick".

Can I only get shortcuts by adding them to my favorites? And even there they get lost when I restart my computer.
This is a bug in Mountain Lion for which there seems to be no fix as yet. If you eject the network folder then re-connect it will appear in the sidebar but next time you login it will be gone.