Combining Timber Peak with Original

[Slurpee Shoes]

I just got Timber Peak today and I want to combine it with my original LNOE.

My question is about the Hero and Zombie decks that came with Timber Peak.

If I'm using Timber Peak rules and items etc..., then do I only use the Timber Peak Hero and Zombie Decks? Are my original LNOE Hero and Zombie decks now obsolete and destined to be dust collectors?

My apologies if this has been covered in a previous post.

Thanks!

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EDIT:
Well after posting this I dug around and found the discussions about this exact topic. It seems that the general consensus is that there is no general consensus. Do what feels right seems to be the answer to my question.

I suspect I'll initially keep the decks separate and mix everything else to get a good feel for the changes in TP.

Thanks for reading!