In Traktor 3.5.2 and prior, I had no issue. In 3.6+, when my collectionis saved, every track has the path reset to C:\
This is emphasised as collection.nml file size shrinks.
My track path does include one symbolic link / windows shortcut.
I can restore my collection from a backup and traktor loads it fine. However as soon as I exit and collection.nml is re-saved, all paths for every track in my collection is set to C:\[track file] - so when I next open the collection, no track can be found or opened.
I have reverted to version 3.5.2. Same issue occurs in 3.6.1 and 3.7.1.
Windows 10.