Attachments have been deleted vb 4.2.3

[dariyos]

Hello,

wrong uploaded attachments have been deleted and will delete in future and I don't know why.
Over 12.000 Files in Filesystem and Database deleted already!

An attachment from friday is also deleted.

you can see here in post #3:

http://www.sps-forum.de/codesys-und-...rittkette.html

It shows only the text:

Attachment (ID)

I know, that the attachments will be delete automatically (after upgrading to vb 4.2.3), when the refcount value of filedata entry is null - but I don't know why so many files had the refcount value 0, and why I get more "wrong uploaded attachments".

maybe there are problems with the filemanager since the upgrade?

today I will correct the values from an older Database, and copy the entrys to the actual database and upload the attachments from an backup, again.

I don't want that they will be delete in the future and get the wrong refcount value.

How is it possible to upload an attachment WRONG, that it get the value 0 and be deleted?

I don't have any Image/Attachment-Upload Plugins installed ...

What can be the issue?

PHP 5.4.42-nmm1
Mysql Version 5.6.24-nmm1-log
vb 4.2.3