Lost collection data when upgrading from 1.5.3 to 2.1.3

After I upgraded to 2.1.3, many, but not all of the collection names and parent collection names were lost, replaced by "Untitled." I noticed it after I upgraded the Collection Tree plugin, but it might have been like that from the initial upgrade. I tried deactivating the Collection Tree plugin, but this did not change anything.

Tree: http://njdigitalhistory.org/NJDHA/collection-tree
Collection View: http://njdigitalhistory.org/NJDHA/collections/browse

From the links, it looks like the titles are there -- did you manually fix this?