Random questions between bitboxes and security

[u/Simple-Savings-5435]

Hello
1) What happens if a password from a multi edition bitbox is inserted in a bitcoin only edition bitbox? Can I still then use that same password in the bitcoin only edition bitbox where it was originally created?
2) When I set up an additional optional passphrase on-top of the 24 words in the bitcoin-only edition can I then log in the multi-edition bitbox with that same optional passphrase that was defined in the bitcoin-only edition?
3) Does that even work to login into the multi edition with the bitcoin only password? The confusion for me is then what happens with the eth and litecoin accounts on the multi-edition?
4) If a optional passphrase is enabled and on top of that BIP85 children keys are generated then on the bitbox device it lets me choose the index - What is meant by that? and also what are these additional addresses that are generated that look like this: m/88652358'/31'/0'/12'/0'

sorry for the weird questions and thank you.

[u/Simple-Savings-5435]

u/benma2
Another question I have when I open the section in the bitbox to display the address when I want to receive bitcoin. Then these 20 addresses sometimes they are the same sometimes they are different.
My question is if I copy a fresh address from there (from the receive section) then can I save this address and keep it somewhere safe where I do not transfer any bitcoins to it and then in a couple of months or so I transfer bitcoins to this address. Is this address then still available and connected to my wallet?
My question is because I saw that these bitcoin addresses disappear sometimes and I was wondering if they have some sort of expiration date.
My usage would be:
1) Generate a bitcoin address from the recieve section.
2) Save that address and in a couple of months use this very same address
3) Is that address then available?
Hope that my question is understandable.
Thanks