# File resaved and date changed when do nothing
**URL:** https://community.mp3tag.de/t/file-resaved-and-date-changed-when-do-nothing/43578
**Category:** No Bugs
**Created:** [November 18, 2018, 7:40am UTC](https://community.mp3tag.de/t/file-resaved-and-date-changed-when-do-nothing/43578 "2018-11-18T07:40:45Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@usamike](https://community.mp3tag.de/u/usamike)
#### Post date: [November 18, 2018, 7:40am UTC](https://community.mp3tag.de/t/file-resaved-and-date-changed-when-do-nothing/43578/1 "2018-11-18T07:40:45Z")
hi,
with release 2.90a
when i open the extended metatag dialog window and just click OK to close it then the sofware resave the whole files and change the date (whereas i changed /updated /did nothing)
have a good day.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [November 18, 2018, 12:07pm UTC](https://community.mp3tag.de/t/file-resaved-and-date-changed-when-do-nothing/43578/2 "2018-11-18T12:07:04Z")
see here:
> [@File Modified Dates updated Unnecessarily](https://community.mp3tag.de/t/file-modified-dates-updated-unnecessarily/19340):
>
> I've noticed that if I have a group of files selected in the MP3Tag window and apply a change that only affects some, the Windows modified date/times for all the selected files are updated I had a few files that had an extended tag set wrong, and rather that search one at a time, I selected the whole folder and set the proper tag, expecting that only a few files would be modified Example: Copy a group of files to a temp folder (Comment field in all was blank) Apply MP3Tag to the folder a…
If you do not want anything to happen to the file, close the extended tags dialogue with Cancel.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [November 18, 2018, 5:12pm UTC](https://community.mp3tag.de/t/file-resaved-and-date-changed-when-do-nothing/43578/3 "2018-11-18T17:12:01Z")
Just for clarification: Mp3tag always writes metadata to the files when told so without examining first, whether saving it would result in any actual change to the file.
This is by design and not considered a bug.
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### Author:  [@poster](https://community.mp3tag.de/u/poster)
#### Post date: [November 20, 2018, 1:27pm UTC](https://community.mp3tag.de/t/file-resaved-and-date-changed-when-do-nothing/43578/4 "2018-11-20T13:27:51Z")
I think this is a little bit problematic because it is not clear to the user that clicking on o.k. in the extended tag-view is the same like "save" or `CTRL-S` which means saving again all marked files.
I use the timestamp for synchronizing my files between 2 locations over the network. Therefore I need the setting to not preserve the modification time when saving tags.
So here's an example what happened last time when I had a look at my complete library with `ALT-t` and noticed that there were displayed 2 tags that I did not want, DISCOGS\_RELASE\_ID and PUBLISHER.
I marked them to be removed, clicked ok and went for a coffee.
When I came back I noticed that MP3Tag already had changed the timestamp for about 80.000 files, although the unwanted tags affected only a few files.
So next time synchronizing my library will take half a day for the synchronizing software.
I know that I should have filtered for the unwanted tags first and after that apply the remove of the tags. But who thinks that MP3Tag saves every file when you tell it to just delete a tag that is embedded in about 20 files.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [December 28, 2018, 6:53pm UTC](https://community.mp3tag.de/t/file-resaved-and-date-changed-when-do-nothing/43578/5 "2018-12-28T18:53:34Z")
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