No.
All addresses in your wallet is derived from the seed. Any imported address is not derived from the seed so when restoring a wallet it will not be restored.
You will have to import the private key of that address again after restoring your wallet if you still want to make use of it. If you do not have a backup of the private key for that address then its lost i.e. you will not be able to make use of it.
Its important that you keep a backup of any single address you import into any wallet as the backup of that wallet will not include imported addresses.
Thanks so much for help RustyNomad you are appreciated so much.All addresses in your wallet is derived from the seed. Any imported address is not derived from the seed so when restoring a wallet it will not be restored.
You will have to import the private key of that address again after restoring your wallet if you still want to make use of it. If you do not have a backup of the private key for that address then its lost i.e. you will not be able to make use of it.
Its important that you keep a backup of any single address you import into any wallet as the backup of that wallet will not include imported addresses.