I'm running iTunes 22.214.171.124 on windows 10 and MP3tag 2.99a. I use MP3tag to create the tags i want in iTunes and the import the files (m4b audio books) to iTunes. When i change tags in iTunes (chapter , album artist) i see them changing in Windows Explores. When I start MP3tag in the same folder the tags still show the original information I created with MP3tag. If i change the tags again in MP3tag, the file system and iTunes show the changes. It seems the be an one way communication.