iTunes is not organising my files by track

Itunes is not organising my files properly.



I go into to the relevant album file, but only a handful of songs are organised by track number.



I can't even post a picture for some reason, but it's something like this...



1-01 - Song 1

1-02 - Song 2

1-05 - Song 5

1-09 - Song 9

Song 3

Song 4

Song 6

Song 7

Song 10



On itunes all songs are given the relevant track number. I've selected the boxes to copy/orgnaize files, but as above, only a handful of songs on each album are being organized properly



This is one a large number of albums I have. What's happening?



Thanks

via iLounge Forums http://ift.tt/1g50LfU