All the same new directory structure. Seems like it might be the new AOSP standard for Android 10.
Just a heads up in case you weren't aware, but it's a bit of a PITA, right?
Thanx. The system as root **** is introduced with Android 10. I've assumed everybody using 10 roms is aware of this - but after reconsidering, I belive you are right. I've added
"For all system as root roms (Android 10 based roms) you need to adjust PROPFILE in META-INF/com/google/android/update-binary."