It sounds like you have imported a single address from somewhere and then swept your paper wallet to it. You need to figure out where you copied that address from, as without doing that, you will not be able to access the coins.
This is what I get from reading this (quite confusing) story.
I then created an electrum wallet and saved the seed.
Great!
I then created a new electrum wallet within the previous wallet, with key from paper wallet, a watch only address, then I swiped the paper wallet into this watch only address.
Did you import the watch-only address, or the private key?
This watch only wallet is a deterministic wallet
"
A deterministic wallet is a system of deriving keys from a single starting point known as a seed."
I don't understand how you went from a paper wallet to a HD-wallet. I also don't understand how you sweeped the paper wallet onto the address you imported from the same paper wallet.
Can you start explaining everything from the start again?