# M4b file not importing
**URL:** https://community.mp3tag.de/t/m4b-file-not-importing/57829
**Category:** Support
**Created:** [July 4, 2022, 1:39pm UTC](https://community.mp3tag.de/t/m4b-file-not-importing/57829 "2022-07-04T13:39:44Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Dziactor](https://community.mp3tag.de/u/Dziactor)
#### Post date: [July 4, 2022, 1:39pm UTC](https://community.mp3tag.de/t/m4b-file-not-importing/57829/1 "2022-07-04T13:39:44Z")
Been updating the tags of a ton of Audiobooks. I keep running into a few that when I try importing the files/folders the files don't transfer or are seen.
The audiobooks play just fine and I can manually change tags by right clicking and going into properties.
Here are the things I have tried;
1. No filters Active
2. Checked Permissions
3. Re-Downloaded the files
4. Moved the files to different drives
5. Renamed the extension to .m4a
6. Tools/Options/Tags - Made sure all read items are checked
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [July 4, 2022, 1:43pm UTC](https://community.mp3tag.de/t/m4b-file-not-importing/57829/2 "2022-07-04T13:43:41Z")
see this thread:
> [@Certain .m4b files to not be recognized in mp3tag](https://community.mp3tag.de/t/certain-m4b-files-to-not-be-recognized-in-mp3tag/57103):
>
> I have been trying to go through my audiobook collection and add a bunch of tags for better library management, but about 1/3 of my files are not recognized when I open a directory. Some of these files have come directly from Audible, via the OpenAudible program - so it gets the Audible files and converts them to .m4b. I then copied those files over to my library and used Readarr to rename/reorganize them. Now, some of them show up in mp3tag, and some of them don't. I cannot figure out what …
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### Author:  [@Dziactor](https://community.mp3tag.de/u/Dziactor)
#### Post date: [July 4, 2022, 2:09pm UTC](https://community.mp3tag.de/t/m4b-file-not-importing/57829/3 "2022-07-04T14:09:16Z")
Thanks, that worked perfectly. Was it iTunes making those changes?
Ive had an issue where the tags I changed reverted back to how they were originally. Ended up removing iTunes to see if that was it.
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### Author:  [@jrbarron](https://community.mp3tag.de/u/jrbarron)
#### Post date: [July 5, 2022, 1:15pm UTC](https://community.mp3tag.de/t/m4b-file-not-importing/57829/4 "2022-07-05T13:15:00Z")
For me it was Readarr that was adding the tags. Not doing it 100% of the time though, so I gave up trying to identify exactly how to keep it from happening, other than I keep Readarr from altering metadata.
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### Author:  [@MotleyG](https://community.mp3tag.de/u/MotleyG)
#### Post date: [July 5, 2022, 2:03pm UTC](https://community.mp3tag.de/t/m4b-file-not-importing/57829/5 "2022-07-05T14:03:08Z")
Let mp3tag do all of the heavy lifting for your metadata updates. Don't make it a habit to use the `Get Info` feature in iTunes as this is far less versatile and in my experience ends up creating some issues with some tags fields getting unexpectedly altered.
I would also suggest that you make sure your iTunes `preferences` are set so that it cannot make any changes to your file names or locations. While this should not be done anyhow if you refrain from using `Get Info`, it just makes sure that iTunes can only play your tracks form their existing location, and can manage copying your media to your iDevices if required.
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:29pm UTC](https://community.mp3tag.de/t/m4b-file-not-importing/57829/6 "2026-02-09T12:29:50Z")