Missing Crates on the MCx8000

Windows Pc Latest Engine Prime Mcx8000 convert button.

Anyone had the problem of a crate full of music showing up in Engine Prime but as soon as you plug it into the 8K it disappears, even the crate folder ? Also when you hit the convert button it will not convert all tracks because if I hit the button again after it’s finished it says “ analysing 108 tracks” again but no indication what tracks they are.