Recuva still recovers cut file

CCleaner for Windows CCleaner Windows Bug Reporting
1

What i did step by step

1. My USB used entire data wipe using 1 simple Overwrite.
2. After wipe i used recuva which results 100% unrecovered
3. I copy the MOVIE0001.avi (1.6 MB) on my desktop and paste it on my USB
4. Unplug and plug my USB and cut the MOVIE0001.avi and paste it on my desktop
5. USB is empty again then i used recuva and resulting that
the MOVIE0001.avi still exist on my USB.
I was just surprise that the cut file can still be recovered. Now i'm really paranoid for losing my USB :(
2

That's what I would expect. A cut is simply a delete, where the directory entry for the file is flagged as deleted. Recuva is designed to recover such files.

3

But why other files are unrecovered or overwritten?

4

Because you ran a wipe free space against the USB drive, unless there's something here I'm not grasping.