@JamesWilliam12 @dedetuga
Ok, Gentlemen, sorry for the late reply.
Here is the procedure, tested with electrumx-ftc and the core wallet version 19.3
Step 1:
Open the electrumx gui
go to wallet -> private keys -> export
This gives you a list of your addresses, the type of private keys and the private keys.
save the list as csv file
Step 2:
open the core wallet gui
go to window->console window
in the console window, last line type importprivkey <private key from csv file>
The core wallet then will import the private key and scan the blockchain for coins associated with the corresponding address.
repeat the last step for all addresses
That’s it