The Windows Movie Maker "Collections" list is not being deleted by CCleaner v2.04.543.
The only way to delete the file names is to click the Collections button in Movie Maker, select each file and press the Delete key several times.
Adding the following to the winapp2.ini is not a persistent solution in my opinion, and it's complex for non-geeks:
[Movie Maker]
LangSecRef=3023
Detect=HKCU\Software\Microsoft\MovieMaker
Default=True
FileKey1=%userprofile%\Local Settings\Application Data\Microsoft\Movie Maker|*.col
FileKey2=%userprofile%\Local Settings\Application Data\Microsoft\Movie Maker|*.dat
Can this be added to CCleaner as a permanent item?