or... if i move one can i just go to the film and click edit, then manually edit the location so when next scanning it does not see it as new.
When you change the location of your files, you should use the keyboard shortcut CONTROL + "L"http://www.coollector.com/help.html#shortcuts
to replace a string by another string in all the location fields.
For example, it's possible to replace the string "C:\Movies\" by the string "G:\Videos".
If i delete a film it still shows as owned next time i scan files.
I don't understand. Why do you scan files if you don't want them to be added ?