CLS - Deleting READ messages question

[SherWat]

I have Call Pilot Version 5.01.01.08
A year ago I had set up a specific class of service that, for some reason, did not have a check mark for the DELETE READ MESSAGES AFTER 7 DAYS.
Today I checked this box so that now messages that have been read will now be deleted after 7 days.

My Questions is:
Will the system now go through and delete the messages that are older than 7 days prior to the time of my change this morning? I guess this would occur tonight during a nighttime routine?

thanks.

 

[StanleySteamer]

Yes it will clean up the messages overnight.

 

[SherWat]

Thanks.
I ran a report before I checked the box so will run a report tomorrow to see the difference in the storage.