Help? sync. to iTunes on new iPhone duplicated all songs putting copies in "unknown album" folders others in existing albums
I recently upgraded to an iPhone 13 pro from an iPhone 6s both phones are at V 15.3.1
I did the Quick Start to migrate data from the 6s to the 13
I use iTunes on Windows V10 to sync. calendar and contacts from Outlook, and music from
my C:\Users\xxxx\Music\iTunes\iTunes Music folder.
A few days after the quick-start I then sync-ed thru iTunes
I am using V12.11.3.17 from the Microsoft store.
(It is a down level version as I have concerns that at some point Apple
will make good on it's warning to "deprecate" the outlook sync. function - but that's another story.)
ALL of my music is local to the laptop no iCloud or Apple-purchased sources of music
After the first sync. all was fine.
On the 2nd sync. it took much longer than usual to sync. spending a LOT of time "sync-ing" music.
Somehow the "sync" created extra "unknown album" folders for many artists,
and copies of typically only one song from the original albums the newly created "unknown album" folders. In other cases ONLY the original album folder exists, but EVERY song is in the album twice.
This screw-up is ONLY on the iphone the extra albums / songs do NOT appear in iTunes,
(File --> Library --> Duplicates) is clean, and the actual folder structure on my laptop has
no duplicates either the C:\Users\xxxx\Music\iTunes\iTunes Music folder is as expected.
Any suggestions on how to best remedy this mess would be MUCH appreciated.
iPhone 13 Pro