Right. In that case, in the instructions that HCP laid out in the post you linked to (https://bitcointalk.org/index.php?topic=2373020.msg24316954#msg24316954), you should ignore the second step of changing the word "mnemonic" to "electrum". Since you've done that already, change it back and reload your copy of iancoleman.

Enter your Electrum seed, and then select "BIP49" under Derivation Path. The addresses should now match those that show up in your Electrum wallet.