I have structures and alignments data referenced. If I assign the structures ref alignments in the dwg with the data refs for labeling, the next time I open the dwg the ref alignments are set back to none, causing the labels to be ?????.
It seems like this worked in the past?
Civil 3D 2012 SP2
It seems that references are not synchronizing. See if you can go to Manage tab and synchronize. Also in command line type REFRESHSHORTCUTNODE and see if it helps.
Finally, once you have your labels shown see if you can set the layer where labels reside as locked. That may help, too.