# Action group messing up Serato tags
**URL:** https://community.mp3tag.de/t/action-group-messing-up-serato-tags/64705
**Category:** Mac
**Created:** [May 19, 2024, 7:06am UTC](https://community.mp3tag.de/t/action-group-messing-up-serato-tags/64705 "2024-05-19T07:06:18Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@evillevi](https://community.mp3tag.de/u/evillevi)
#### Post date: [May 19, 2024, 7:06am UTC](https://community.mp3tag.de/t/action-group-messing-up-serato-tags/64705/1 "2024-05-19T07:06:18Z")
I have applied the following action groups to a bunch of mp4 video files on an Mac OS Journaled formatted external drive:
- replace words in comment field
- delete words in comment field
- append string to comment field
My Serato tags are now messed up and look like this
The beatgrids are gone in the files that have been affected by an action group.
I'm using MP3Tag for Mac 1.8.22 (105) and Serato DJ Pro 3.1.3 on a Mac Mini M2 base model.
I've got no explanation for this behaviour, but perhaps some people on this forum might be able to provide some insight into this issue. It's as if all fields were affected by the actions, and not only the comment field.
Thanks in advance
Levi
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [May 19, 2024, 7:43am UTC](https://community.mp3tag.de/t/action-group-messing-up-serato-tags/64705/2 "2024-05-19T07:43:16Z")
Can you check if this is related to your previous topic on a similar issue:
> [@Serato tags messed up](https://community.mp3tag.de/t/serato-tags-messed-up/52946/6):
>
> I've applied the Case Conversion to UPPER for \_TAG for the test files and used the "Rescan ID3 Tags" option from Serato. I've also accidentally messed up my whole local library by first pressing the "Analyze Files" option which made Serato write all kinds of tags into my files. I could not reproduce the issue where the color codes and locked beat grids have been removed by Mp3tag for Mac for the MP3 files. They still show as locked and the color is also present. I could reproduce the issue wit…
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### Author:  [@evillevi](https://community.mp3tag.de/u/evillevi)
#### Post date: [May 19, 2024, 8:40am UTC](https://community.mp3tag.de/t/action-group-messing-up-serato-tags/64705/3 "2024-05-19T08:40:45Z")
Hey Florian
I was thinking the same. But this time I haven't applied the action to all the fields (thus messing up the beatgrid tag in Serato), but only to the comment field.
What I can try is check with a new, downloaded MP4 (one that could not possibly have been affected by the similar issue from my previous topic) and a new MP3 to rule some things out.
I'll get back to you.
Thanks
Levi
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### Author:  [@evillevi](https://community.mp3tag.de/u/evillevi)
#### Post date: [May 19, 2024, 4:36pm UTC](https://community.mp3tag.de/t/action-group-messing-up-serato-tags/64705/4 "2024-05-19T16:36:58Z")
Yep, I'm afraid it is related to my previous disaster : )
Now, fortunately I have a backup so everything is back to normal, but now I'm afraid to apply any more actions on my video files. It seems a substantial part of my MP4 collection loses the beatgrid as soon as I use the actions in MP3Tag.
It's by accident that I see which files are still having issues (after using actions in MP3Tag).
I wish I could detect them in advance, to see which ones need to be downloaded again.
Is there a way to have all tags (extended too), like beatgrid, copied over in MP3Tag, even if one has to do it manually, one file at a time?