So I have these paper wallets (a couple are actually printed on paper while a couple of others are saved to text files) and I was wondering will there always be backward compatibility for Bitcoin Wallet Addresses?  All of the wallet addresses on my paper wallets start with the number 1 so they are quite old now.  From what I can tell, there are balances for some of the forked coins, but I'm not ready to shift the bitcoins or get the funds from their forked counterparts (I'd have to have even more paper wallets to accommodate the forked coins compounding the problem).

From what I've seen wallet addresses have started with 1, then 3, now they are bc1q ... I guess I'm wondering do I need to shift the funds to new paper wallets?  Or, keep them as is and hope a future bitcoin wallet can still accept them?