Hi,
I tried to see what answers do not work for you, but could not find the reason for it, let me try to collect all of them and give you step by step based on your description:
1. Select all files from E:\MMW\Music\Unknown\The Platinum Collection (CD 1)
2. Right click -> Properties
3. Set Disk # field to 1
3. Album Artist to "Frank Sinatra" and album to "The Platinum Collection"
4. OK
5. Do right click Organize files -> use mask "e:\MMW\Music\<Album Artist>\<Album>\<Track #>-<Artist>-<Title>" and it should correspond to "E:\MMW\Music\Frank Sinatra\The Platinum Collection\"
6. Select all files from E:\MMW\Music\Frank Sinatra\The Platinum Collection (CD 2)
7. Right click -> Properties
8. Set Disk # field to 2
9. Album Artist to "Frank Sinatra" and album to "The Platinum Collection"
10. OK
11. Do right click Organize files -> use mask "e:\MMW\Music\<Album Artist>\<Album>\<Track #>-<Artist>-<Title>" and it should correspond to "E:\MMW\Music\Frank Sinatra\The Platinum Collection\"
Now all files will be in the right place and if you right click on any files -> Find More From Same -> Album: The Platinum Collection will show you both CDs in right order and correctly named?
If you decide to do a refund please open Sales
Support ticket and ask for refund with all the purchase details.