# \[F\] Case conversion on \_FIELDNAME leaves blank field
**URL:** https://community.mp3tag.de/t/f-case-conversion-on-fieldname-leaves-blank-field/6203
**Category:** Fixed Bugs
**Tags:** bug-fixed
**Created:** [February 6, 2008, 9:09pm UTC](https://community.mp3tag.de/t/f-case-conversion-on-fieldname-leaves-blank-field/6203 "2008-02-06T21:09:20Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@JJ\_Johnson](https://community.mp3tag.de/u/JJ_Johnson)
#### Post date: [February 6, 2008, 9:09pm UTC](https://community.mp3tag.de/t/f-case-conversion-on-fieldname-leaves-blank-field/6203/1 "2008-02-06T21:09:20Z")
Executing a Case Conversion action on \_FIELDNAME leaves behind a blank field with the name \_FIELDNAME.
This must have begun with 2.39n. I just reverted to 2.39m and it doesn't have the bug.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [February 6, 2008, 9:14pm UTC](https://community.mp3tag.de/t/f-case-conversion-on-fieldname-leaves-blank-field/6203/2 "2008-02-06T21:14:09Z")
Unfortunately, I can't reproduce it here.
Does this also happen if you only apply this action to an untagged file? On which file type are you observing this issue?
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### Author:  [@JJ\_Johnson](https://community.mp3tag.de/u/JJ_Johnson)
#### Post date: [February 6, 2008, 9:20pm UTC](https://community.mp3tag.de/t/f-case-conversion-on-fieldname-leaves-blank-field/6203/3 "2008-02-06T21:20:18Z")
> [@Florian](#):
>
> Does this also happen if you only apply this action to an untagged file? On which file type are you observing this issue?
They're Flacs. As a matter of fact I tested on a group of files where I removed the Flac tag and it created a new one with only the \_FIELDNAME field.
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### Author:  [@JJ\_Johnson](https://community.mp3tag.de/u/JJ_Johnson)
#### Post date: [February 6, 2008, 9:35pm UTC](https://community.mp3tag.de/t/f-case-conversion-on-fieldname-leaves-blank-field/6203/4 "2008-02-06T21:35:41Z")
I reinstalled 2.39n and ran a test on some Mp3 files with i3v2.3 tags (although there would be no reason to do a fieldname case conversion on id3 tags) and it created a TXXX \_FIELDNAME frame.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [February 7, 2008, 7:15pm UTC](https://community.mp3tag.de/t/f-case-conversion-on-fieldname-leaves-blank-field/6203/5 "2008-02-07T19:15:34Z")
Thanks for reporting! I'll fix it to the next Development Build.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [February 9, 2008, 8:10pm UTC](https://community.mp3tag.de/t/f-case-conversion-on-fieldname-leaves-blank-field/6203/6 "2008-02-09T20:10:36Z")
[Fixed](http://developer.mp3tag.de).
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [December 28, 2018, 1:59pm UTC](https://community.mp3tag.de/t/f-case-conversion-on-fieldname-leaves-blank-field/6203/7 "2018-12-28T13:59:05Z")
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