# Convert Tag -\> Tag creates folders already when entering the format string for \_FILENAME
**URL:** https://community.mp3tag.de/t/convert-tag-tag-creates-folders-already-when-entering-the-format-string-for-filename/70199
**Category:** Fixed Bugs
**Tags:** bug-fixed
**Created:** [November 19, 2025, 4:15pm UTC](https://community.mp3tag.de/t/convert-tag-tag-creates-folders-already-when-entering-the-format-string-for-filename/70199 "2025-11-19T16:15:14Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@ve3auo](https://community.mp3tag.de/u/ve3auo)
#### Post date: [November 19, 2025, 4:15pm UTC](https://community.mp3tag.de/t/convert-tag-tag-creates-folders-already-when-entering-the-format-string-for-filename/70199/1 "2025-11-19T16:15:14Z")
Hello everyone,
I think I have found a bug (undocumented feature 😆 ) in the section for Tag to Tag conversion.
When using this procedure to work on \_FILENAME, as you build your string in the popup box, MP3Tag creates folders in the destination based on the format string you are creating.
Here is a link to the vid of this happening.
> **[2025-11-19\_10h27\_59.mp4](https://drive.google.com/file/d/1UjX4KfI1SzGtmFglPXY0eaVl-_h8uBWm/view?usp=sharing)**
>
> Google Drive file.
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### Author:  [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)
#### Post date: [November 19, 2025, 4:21pm UTC](https://community.mp3tag.de/t/convert-tag-tag-creates-folders-already-when-entering-the-format-string-for-filename/70199/2 "2025-11-19T16:21:57Z")
I assume that your 'undocumented feature' applies as soon as `%_workingpath%` is involved.
Using `%_workingpath%` in the Formatstring, I can reproduce the unwanted creation of additional folders during the preview phase, before clicking OK.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [November 19, 2025, 9:33pm UTC](https://community.mp3tag.de/t/convert-tag-tag-creates-folders-already-when-entering-the-format-string-for-filename/70199/3 "2025-11-19T21:33:53Z")
Thank you for reporting and for taking the time to produce the video! I've also reproduced the bug, it happens when the format string contains any folder path that doesn't exist yet.
I've checked the code and the issue is almost 4 years old. It's already present in v3.12 from early 2022, 20 versions back 😅
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### Author:  [@ve3auo](https://community.mp3tag.de/u/ve3auo)
#### Post date: [November 20, 2025, 7:12pm UTC](https://community.mp3tag.de/t/convert-tag-tag-creates-folders-already-when-entering-the-format-string-for-filename/70199/4 "2025-11-20T19:12:40Z")
Not a problem. I think it involves mor than just the ‘workingpath’. I also saw something else funny that I will document here for you. Ill create a new topic for it.
Thanks for the great work
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [November 28, 2025, 9:07pm UTC](https://community.mp3tag.de/t/convert-tag-tag-creates-folders-already-when-entering-the-format-string-for-filename/70199/5 "2025-11-28T21:07:48Z")
I've just released [Mp3tag v3.32d](https://community.mp3tag.de/t/455), which should fix the creation of folders during preview. Thanks for reporting!
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [December 28, 2025, 9:08pm UTC](https://community.mp3tag.de/t/convert-tag-tag-creates-folders-already-when-entering-the-format-string-for-filename/70199/6 "2025-12-28T21:08:11Z")
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