Last feedback from a tester :
first of all, I've tested the backup function extensively and it works fantastic.
I edited around 500 files in Excel mostly using autofill, copy and paste.
Then I ran the backup function and took the resulting files and put them in the KPA-backup tar-file.
I then did a restore and had all files show up with their tags edited.
I can now use the filter and view modes of the new OS and it's fantastic to have all Fender amps line up behind each other.
"save tags" day is approaching...
Laurent