[Q] Knox warranty, weird situation topic

As I know it is impossible to revert a tripped knox on an i9500 ...

But Today I switched to Note Edge, and I will hand over S4 i9500 to one of my family members so I just flashed I9500UBUGNJ1_I9500UUBGNJ1_I9500UBUGNJ1_HOME.tar.md 5 via odin..

And what i see now on the download mode is Knox Warranty Void : 0

I have rooted and installed unlimited number of custom roms. Is it really what I am thinking? My knox counter really reset itself?

If yes, how is it possible?