# Is there an option to remove all unknown atoms

**URL:** <https://community.mp3tag.de/t/is-there-an-option-to-remove-all-unknown-atoms/14643>\
**Category:** Support\
**Created:** [April 15, 2013, 4:58pm UTC](https://community.mp3tag.de/t/is-there-an-option-to-remove-all-unknown-atoms/14643 "2013-04-15T16:58:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![nitz](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/n/bc8723/32.png) [@nitz](https://community.mp3tag.de/u/nitz)\
**Post date:** [April 15, 2013, 4:58pm UTC](https://community.mp3tag.de/t/is-there-an-option-to-remove-all-unknown-atoms/14643/1 "2013-04-15T16:58:50Z")

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Sometimes when editing Nero M4A files I would find such an option useful. Thanks!

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**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\
**Post date:** [April 16, 2013, 3:51am UTC](https://community.mp3tag.de/t/is-there-an-option-to-remove-all-unknown-atoms/14643/2 "2013-04-16T03:51:29Z")

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I think cutting all tags from a file and pasting them back again leaves only the ordinary fields but not the private ones.  
Also, there are actions for removing individual fields (Remove fields, Remove fields except).

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**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\
**Post date:** [February 9, 2026, 12:24pm UTC](https://community.mp3tag.de/t/is-there-an-option-to-remove-all-unknown-atoms/14643/3 "2026-02-09T12:24:26Z")

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Closed on February 9, 2026, 12:24pm UTC