1. Yes, if the packages have the same GUID. Office 2013 packages are never supported to be edited in the sequencer. As is stated previously - http://social.technet.microsoft.com/Forums/en-US/b9d14536-27fc-4b5a-aef9-9872cf7df919/oct-and-office-2013-appv-package?forum=mdopappv
2. If using the same Package GUID: Updated. If using a different package GUID: New-fodler
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