That's the thing. With the other address, I used the seed to generate the private key. But with this address, I never got a seed. Anyway. That's not an issue. This wallet is not too widespread, so I can just transfer the funds and be done with it.
Sorry I couldn't be of much help.
BTW, now that I have the wallet functioning in electrum, does it still function the same way on the blockchain app? Or does it automatically become a watch only wallet?
Yes. Bitcoin cannot "deauthorise" any wallets from sending payments if they have the correct private key. You can still use both the wallets, though I recommend just using Electrum and archiving the Blockchain.info wallet.