Files deleted by changing tags

Hello everyone!
I spent weeks making a Sample Pack in .wav format (a folder with subfolders full of short .wav files) and I edit the [Collaborating Artists], [Album], [Year] and [Composer] tags of all the files within those subfolders to put my data.
Everything seemed fine after applying the changes, but now after weeks, I go to those subfolders and it turns out that now 90% OF MY WAV FILES ARE NO LONGER THERE, only the first 10 or 12 are left.

Can the program generate this type of errors because I changed those tags on the files? (I didn't use spaces, accents or weird symbols to do it)

Could you check the status bar at the bottom how many files you have loaded and how many are displayed?
And if ther is a difference, could you check whether you have applied a filter?

In addition to @ohrenkino's advice:
Could it be that you have moved them to another location?
(Maybe you have used an Action which modifies the file path?)

Please search for such missing files on your entire HDD or SDD.
The risk that Mp3tag has deleted them without any notice is extremly low - if possible at all.

I searched everywhere for the lost files and even used Recuva to see if they were recoverable, but nothing :frowning:

My only theory for mp3tag deleting 90% of the files in each folder, preserving only the first 10... would be that the program didn't support or correctly perform changes to SUCH a large number of .wav files spread across different folders.
(From the image I share, the main folder I selected to alter tags is "Difference", which in turn has several subfolders full of .wav files [Out of the 104 Kicks I had in this "Kicks" folder, it only preserved the first 8])

I haven't applied any filters since I installed the program, I just used it to change the tags of all the .wav files located in the main folder [Samples] My only theory is that by having SO MANY .wav files loaded at the same time, mp3tag has discarded 90-80% of each folder... but removing the unselected ones xD

MP3tag can load more than 100,000 files at any one time.
You are right: you have not applied a filter - 492 files have been loaded and all of them get displayed. And these files come from the folder "Drums" which is a subfolder to

Loading a subfolder with 492 files looks plausible to me.
So, how many files should be loaded from the folder "Drums"?

Currently, in the Drums folder there are a total of 497 .wav files (The first time I used the program I had over 1000 [This Drums folder was the most affected by the file loss])

Then, another important folder "Digital Drums" (Which at least did not lose a significant amount of files) currently has 289 .wav files

Currently, the Main folder "Samples" has 909 files, but if I remember correctly, before losing several due to changing labels, it had over 1600.

The strange thing is that some sub-folders (the lighter ones) were left intact, but the heavier ones like "Kicks" were affected by this file loss.

I see only 492 loaded files - so which 5 files are missing?

Ah, you're right... Mp3tag doesn't count these .fst files (DAW FL STUDIO Pressset), so if I delete them in certain folders there would be 492 wavs left.

So, could it be that there are other files that MP3tag does not load?

Nah, only this 5 .fst files, the rest are/were pure wav files :no_mouth:

I have to take your word for it.

Which leaves your investigation whether the files have been moved elsewhere.
E.g. folders with a leading space character in the name are invalid and may be renamed.

You would have to supply more evidence so that others in the distance can reproduce the behaviour.

TBH, MP3tag usually does not delete files without any notice and/or dedicated commands from the user.

Maybe the same drag and drop issue as in Drag & drop option windows 11 ?