Merging and Inter-rater reliability in NVivo for Mac Posted May 12 · Report reply I am the data manager for a project for which we are using NVivo collaboratively. Currently, I am trying to merge several projects to run an inter-rater reliability test. I just switched to NVivo 12 and the merge doesn't seem to be going the way it did with NVivo 11. When I merge two projects, the internals/files show up more than once in the internal window. Is that supposed to happen? I don't remember that happening when I did the same with 11.