An 'Update Archive' entry in a change package has IMHO "No Value" in a project configuration context.
So the two commands "apply Change Package" and "resyncronize Change Package" should ignore these entries completely.
Update Archive operations occur when checking in changes to a member with the 'Update Member Archive' option not selected. It simply means "store a newer version of this file - but not not uses it (yet)".
So compared to an update of the member revision for a member (which is an 'Update' entry) the 'Update Archive' entry does not have any net effect on the project configuration in a "apply Change Package" command, as project only care for their "members", not their source archives.