Do Updates get Automatically Removed From the List of Updates After a Period of Time?

I've been updating updates everyday now for a good month and notice that every morning that I check the Approve updates I notice that the ones that I approved a month before still appears on the list with a check mark next to it and "Approved" next to the name of the update. Do these updates remove themselves from the Approve update list automatically after a period of time or do I have to do something to clear the list?

From the microsoft.public.softwareupdatesvcs newsgroup
Once updates are downloaded through a SUS server sync, they are always there and never deleted. Their status (approved / unapproved) is up to the SUS server admin. Even if you unapprove an item, it doesn't go away and can always be re-approved at a later time if desired.