Thanks for the reply. Unfortunately that doesn't really answer the question. I've already copied my seed into Electrum. That is the only seed available in the wallet that I can find. But blockchain allows me to create these other "addresses" that do not appear to be part of the seed.

I can't figure out how to backup those other "sub wallets". There's only one seed available.

What I might just have to do is create several Electrum wallets and then send the bitcoin to those wallets. But then that creates a different problem. I like the simplicity of using Blockchain.info. I like that it's available to me anywhere, anytime. But I also want the ability to transact if blockchain is down or they decide that I'm not compliant with their TOS.  So I have Electrum where I have complete control of my keys w/o having to rely on Blockchain.

The problem is that I don't understand what these things are in blockchain. These other addresses appear to be part of blockchain's HD wallet. But when I use the seed in Electrum it doesn't see them.

What I may have to do to get the exact functionality I want is create full blockchain wallets for each and not use these sub-wallets. And then export the seed from the full wallet into seperate Electrum wallets.

I guess I was hoping that someone here better understood what these things are.