You can remove *.wav; from Options > Tags > Restrict incoming files to
I'd appreciate it if you don't mix topics here. I've already read somewhere in the forums about your wish for options for WAV tagging and instead of using this thread, it would be great to read about some background to your wish (e.g., why those options would be beneficial for you) in the OT.
I don't need the options personally. Since no one seems to need an ISO/UTF option for the WAV Id3v2 tag, I suppose no option is the way to go until there is a demonstrable need. I have a hunch that ISO was already obsolete when the (RIFF Id3v2) scheme was introduced.
If you are converting files from say FLAC to M4a within iTunes, you need to convert the files
into WAV before hand as iTunes does not convert FLAC.
So you have your untagged m4a files sitting in your iTunes folder and you want to copy the tags
across from the original folder, but if you right click the folder then you get WAV + FLAC which
will totally mess up when copying them over to the M4a files.