Missing oculus osig file from APK

Development Platform & Builds XR Development
1

OSIG file added to \Build\Android\assets
also added to c:\Program Files\Epic Games\UE_4.18\Engine\Build\Android\Java\assets\

also tried to add to only one of both folders.
Remove Oculus Signature Files from Distribution APK is OFF

still have no asset folder in apk .

in logs I have this
UATHelper: Packaging (Android (ASTC)): Oculus Signature Files (osig) will be removed from APK

Why it being removed with “Remove Oculus Signature Files from Distribution APK” unchecked?

2

Any info on this? New comp, 4.19 - same behaviour
UATHelper: Packaging (Android (ASTC)): Oculus Signature Files (osig) will be removed from APK
UATHelper: Packaging (Android (ASTC)): Deleted file C:\Users\dima\Documents\Unreal Projects\RealisticRendering\Intermediate\Android\APK\assets\oculussig_051527dfdb4cbc33d

Why it does this?
Release/debug Remove oculus ON/OFF does not metter. It just keeps deleting SIG file