Can someone help me? I have a casascius coins and want to extract the bitcoin cash and also the BTC

I imported the coin/privkey on blockchain.info and sent the btc to a safe adress

then I exported the private key of that adresse

when I import this private key in  electron cash it generates me a different public key and i cant acces the btc cash.


What can I do ?:/ I know that a private key can have multiple  public keys but electron cash should be able to handle that? any other idea how to get them?