It would be cold to cold. I'm hoping to avoid memorizing a new seed phrase

What happens to your old wallet when you reconstitute your private keys on a new cold wallet? I'd like to move over to a bitcoin only wallet. I'd add a passphrase to the new wallet for an additional layer of protection.

Interest rates seem a tad high, anywhere between 9.25 and 14% depending on the term. But I do like the idea of collateral held in a multisig...

Wow thanks for all of your replies, interesting discussion. The hypothetical is just an exercise attempting to educate myself as to what the hell to do with the seed words when in a jam. I am new to the space. So maybe we don't go as far as describing it as a total societal collapse. But it could be close, for example "society" can be a local situation.... let's imagine we are in Sydney right now, Marshall law, troops enforcing lockdowns, camps for the unvaxxed, etc. This IS happening, and I want OUT for example. Looks like I would need to secure a new BIP39 wallet wherever end up looking to be a free human being. OK fine but what if for whatever reason new hardware wallets are not available. And all I have is internet access...

Hypothetical::So the worst has happened, economic and societal collapse. My family escapes to a bitcoin-friendly (or unfriendly) jurisdiction. I do not have my hardware wallet. Before fleeing I smashed it to pieces, least it's confiscated. Seed phrase memorized and ready to go. Now what?

Hello, I have 1 keepkey hardware wallet, 1 personal exchange account (most of which has been moved to the wallet) and 2 other retirement accounts that hold crypto. Can I use that one keepkey device to generate separate addresses to hold the retirement crypto? The custodian has told me that they would just need the public keys.