HD Plugin updates

[DLS]

Hi. I have several plugins from Digi including DPP-1, D-Verb, D2 and D3 amongst others. How do I update these plugins to the HD versions? I ask this because my HD system will not be on the same computer as my mixplus system. I need to buy a new computer in order to run HD and therefore the installer won't find any old plugins to update. I am essentially building a new system but I would like to update my old plugins for free. If I deauthorize my current plugins, will the keys work on my new computer with HD to possibly authorizes any demos on the installer CD. Any advice would be helpful as I do not want to spend thousands of dollars for new versions of my Digi plugins. Anyone from Digi have any ideas? Thanks!