I have an Action applied to one mp3 in list that has ""Dj" in it.
Replace "_ALL": "Dj" -> "DJ"
I get "Formatted tags in 1 of 1 files. 0 of 1 renamed."
Renaming was successful but pop-up dialog shows confusion.
Disregard this post. My "Dj" string was in Artist field but not in Filename. The second sentence is ONLY for "Filename" field. Had to reread it a few time to understand.