That's what you should do. Create a new wallet from Coinomi (don't forget to save your seed), and them to the BTG sweep.
Thank you so much! That worked perfectly! I'm rich now!
Do you think it's safe to leave it in Coinomi now? That swept it from my previous private key in Electrum to a new private key in Coinomi, if I understand it right. Right? So I shouldn't have to go sending it to a new address or anything, right?
Thanks! You're awesome!