Since this questions is asked a lot via email - here is the procedure.
If you own one or more packs from any bundle - and like to upgrade to the full bundle - do like this:
1) Buy the full bundle
2) Select additional packs from other bundles for free
e.g. you own Pack 28 and 29 from Bundle IV:
1) Buy full Bundle IV via the online shop
2) Send me an email that you like to get packs 23 and 24 for free