# Convert, Filename-Filename deletes file if pattern is incorrect

**URL:** https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136
**Category:** Support
**Created:** [April 29, 2026, 7:43am UTC](https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136 "2026-04-29T07:43:37Z")
**Posts on this page:** 8
**Page:** 1

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### Author: ![SisterSarah](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/s/e9bcb4/32.png) [@SisterSarah](https://community.mp3tag.de/u/SisterSarah)
#### Post date: [April 29, 2026, 7:43am UTC](https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136/1 "2026-04-29T07:43:37Z")

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Trying to move file into sub directory of same name using Old: %1 New: \%1\%1

The Preview will show the incorrect path:

"C:\c\_temp\New Bug\Bug.mp3" -\>  
"C:\c\_temp\New Bug\\Bug\Bug.mp3"

(the New path should actually be %1\%1)

Lets say (I'm getting on in years) and I clicked "Ok" without checking the preview carefully. This will "delete" the file without any error message.

I would have expected some sort of error message, rather than silently deleting the file.

I have tested this with 3.34 and 3.33.1

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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 29, 2026, 7:51am UTC](https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136/2 "2026-04-29T07:51:08Z")

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I am not sure if the file is really gone - the path

> [@SisterSarah](#):
>
> `\%1\%1`

creates a folder with the contents of %1 in the root directory of the current drive - so perhaps you have now a folder called `c:\bug`  
I also cannot reproduce a path with 2 `\` in the preview if the "new" mask is represented accurately

 ![grafik](https://community.mp3tag.de/uploads/default/original/3X/f/e/fe2af2eb46715959a65d79d1060a9101da1811db.png)

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### Author: ![LyricsLover](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/l/c6cbf5/32.png) [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)
#### Post date: [April 29, 2026, 8:03am UTC](https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136/3 "2026-04-29T08:03:37Z")

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> [@SisterSarah](#):
>
> "C:\c\_temp\New Bug\Bug\Bug.mp3"

Just a quick note:  
You can format special characters like a backslash or an entire path if you enclose them in backticks `

`C:\c_temp\New Bug\\Bug\Bug.mp3`

Or you can select the text and click on the `</>` icon in the mini toolbar for your text:  
 ![image](https://community.mp3tag.de/uploads/default/original/3X/9/5/95d4919672cbd4290b0e71081c5e2137db8946b9.png)

This way you don't need to write 3 backslashes to get 1 visible backslash here in this forum. This is important for seeing the exact format string and helps with debugging special cases and characters.

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<div class="post-metadata">

### Author: ![SisterSarah](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/s/e9bcb4/32.png) [@SisterSarah](https://community.mp3tag.de/u/SisterSarah)
#### Post date: [April 29, 2026, 9:03am UTC](https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136/4 "2026-04-29T09:03:49Z")

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Thank, I just found my file (by accident) in the root of D:

D: is where Mp3Tag is being run from.

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<div class="post-metadata">

### 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 29, 2026, 9:08am UTC](https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136/5 "2026-04-29T09:08:44Z")

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So I would say that MP3tag renames the file accurately according to the user's input.  
The leading `\` says "start in the root folder"

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<div class="post-metadata">

### Author: ![SisterSarah](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/s/e9bcb4/32.png) [@SisterSarah](https://community.mp3tag.de/u/SisterSarah)
#### Post date: [April 29, 2026, 9:14am UTC](https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136/6 "2026-04-29T09:14:08Z")

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You have my incorrect "new" mask correct. If you click the preview button it opens a txt file showing the absolute paths with the double backslash present.

Thanks for the quick response.

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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 29, 2026, 9:36am UTC](https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136/7 "2026-04-29T09:36:25Z")

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You are right, the preview in the editor shows the double backslash.

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<div class="post-metadata">

### Author: ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)
#### Post date: [May 6, 2026, 9:36am UTC](https://community.mp3tag.de/t/convert-filename-filename-deletes-file-if-pattern-is-incorrect/71136/8 "2026-05-06T09:36:28Z")

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