# Pasting MP3 tag to MP4 file - Year gets 2 slashes

**URL:** https://community.mp3tag.de/t/pasting-mp3-tag-to-mp4-file-year-gets-2-slashes/47706
**Category:** Support
**Created:** [January 29, 2020, 3:54pm UTC](https://community.mp3tag.de/t/pasting-mp3-tag-to-mp4-file-year-gets-2-slashes/47706 "2020-01-29T15:54:15Z")
**Posts on this page:** 1
**Showing post:** 4

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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: [January 29, 2020, 6:37pm UTC](https://community.mp3tag.de/t/pasting-mp3-tag-to-mp4-file-year-gets-2-slashes/47706/4 "2020-01-29T18:37:52Z")

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I just tried to recreate the behaviour to see 2 backslashes in the year field.  
The only way that I succeeded was to create 2 fields of the type YEAR in the MP3 file, copy the tag and paste it to the MP4 file - in both cases, 2 fields of the type YEAR are now present - and visible in the dialogue extended tags (Alt-T)  
Could you check the MP3 source file for integrity with one of the tools liked here:

> [@How to check files for errors?](https://community.mp3tag.de/t/how-to-check-files-for-errors/44633):
>
> It’s required and often helps to reduce support cycles to check files for errors before filing a bug report. Symptoms of erroneous files are often missing or wrong bitrate or length audible blips or skips tags seem to be sticky and cannot be removed There are some really good tools to check the files for errors, namely MP3 Diags — identifies many different issues in MP3 files Website: [http://mp3diags.sourceforge.net](http://mp3diags.sourceforge.net) Download: [MP3 Diags - Getting MP3 Diags](http://mp3diags.sourceforge.net/010_getting_the_program.html#binWindows) If the font size in MP3 Diags is …

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