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-snip- Pre-fork bitcoins (always in a non-custodial wallet) require splitting to avoid replay attacks.
Quite off-topic answer: As long as you're sending to your own wallet and it's non-custodial, you don't have to worry that much about 'replay attack'.
But that attack can still damage you if the "
replayed" transaction's output isn't standardized by the other chain, making it hard to spend, non-spendable or anyone-can-spend depending on the script;
so try to use the address type that's supported by most of those forks.
Or course the faster you can send the 'forked coins' to a new address after the first transaction (
from any chain), the lower the risk.
Send/Sweep them to their respective wallets as fast as you can.