Posted By OnnoIllustration:
Sound like that if I join the Partner Program when I'm Non-Exclusive and then become Exclusive I'll have to manually go through my portfolio and de-select all the files that are under 18 months old. That's my understand of the FAQ. If that is correct I rather wait until I'm Exclusive so then automatically only the files older than 18 months are added to the Partner Program.
The other thing is that the addition of files is not automatic. You still need to make sure that your newer files are not selected to add to the Partner Program.
Do as Asylumdown suggested and just go through your port and select the older files to add to the Partner Program now.