It sounds like you had over 1000 files selected in Library.
If you have 1000 files selected in grid view, then double-click one to enlarge, and click Export, you still have 1000 files selected.
(you can see the number of files that will be exported top left in the export dialog)
So it's safer to export from grid view in Library.
If this is not what happened, please tell us what version of LR you are running and your OS.
win10 pro with all updates
nope, i changed the selection and export from the grid does not help
restarted the machine and it seems to be fine now but why LR overwrites files when the skip button was clicked? (german: skip = überspringen)
whoooo, all settings are set back to default on raw files! whats this?
Please provide more details.
Do you mean that the develop settings are gone?
Can you see the edits in the History panel?
And please answer my questions about LR version and OS.
i answered your request for LR and OS version in my second post as follows:
win10 pro with all updates
yes the develop settings are gone for these files
the little icon was removed from the miniatures and the history is empty... but i just reworking it.
i stopped the export process after a few files... it seems LR wanted to export all files, the developed and untouched files...
If you still have problems exporting, try resetting the preferences.
Resetting preferences is done by holding down Alt+Shift when clicking the shortcut to launch LR, which will give you a confirmation dialog. I have found that this does not work as described on Windows 7, but it works this way:
When clicking a desktop shortcut, click the shortcut, and keep the mouse button pressed. Now press Alt+Shift, then release the mouse button.
When clicking a Quick Launch shortcut, right click the shortcut, then left click Open, and keep the mouse button pressed. Now press Alt+Shift, then release the mouse button.
If you have problems with this, do it manually:
Close Lightroom. With Windows Explorer, go to C:\Users\[your user name]\AppData\Roaming\Adobe\Lightroom\Preferences
Delete the file named Lightroom 6 Preferences.agprefs
Now launch Lightroom, and the preferences will be recreated.
Before you export take a look at the space above the filmstrip. Verify that it indicates only the number of image you intend to export. Test.
The fact that all the develop settings (or at least the badges) have disappeared could mean you accidentally opened a backup catalog. Verify you didn't.
In addition, the badges disappearing may not indicate that the develop settings have gone. They can be hidden. Cycles through the 3 stages of visibility while viewing a grid of images using the J key (3 settings)