BCH sent to a BSV wallet cannot be split but You can still access the private seed of the BSV wallet then use edge.app/recovery and display the individual address and private key that has the funds now on edge You can then go on the BCH wallet then scan or enter private key text of the BSV address that has the BCH to import it back.

  1. Tap on the three dots to the right of the BTC wallet that holds the misplaced BCH

  2. Master Private Key

  3. Write down the private key phrase exactly

  4. Go to https://edge.app/bip39-standalone.html

  5. Enter the private key phrase into the BIP39 Mnemonic field

On  https://edge.app/bip39-standalone.html we enter the 24 words private seed of BSV
BUT set to BCH still as you can see in screenshotsTHen locate the address and you can see I can find it