New Classification Sets File Types
I was looking at the new Classification Sets feature, which seems to replace the legacy Classification Importer feature, though the latter is still live. All the SAINT files I have loaded over the past 10 years are .txt files. I looked at the documentation and it shows them as supported in Classification Sets (I'm classifying page name in this case)

But when I went to upload my file in the new Classification Sets UI it says .txt files are not supported. Any reason? Is this a bug?

