A little warning may have helped …
@AMP are you aware of this ??
Not quite the case here . It would appear it has altered file date/time stamps at least how they are read.
What I expected was a seamless update 
What does “Vastly Improved mean” ? There is a new exFAT Driver - I Wonder …
This morning I updated the ROCK software , it seems to be reading the date stamps different from the 3 back ups by Exactly 2 hours (the 3 BU are all the same as per the pics above) so Roon sees them as changed files and re-analyses them.
According to Settings Storage the USB drive has 57763 files, Settings > Audio Analysis is currently 36950 / 50203 so I am even more confused
It will be over soon and as long as it’s a once off I’m OK but I will have to Re BU the 3 drives I did last week !! Painful.
This is a NUC/ROCK with a 4tb SSD internal. I last week attached a 5tb USB HDD formatted exFAT. 6 months trouble free
Just like to know what’s happening !!