Deleted my K-1 by mistake. Re-entered it but lost prior year capital loss carryover. Can't start return over, can't get any help from TurboTax, at a loss. What can I do?

Before I accidentally deleted the K-1, TurboTax had retrieved all the necessary information from my 2018 return, which was also done using TurboTax. Is there a way to get it to retrieve it again? In addition, I tried to start the whole return over but they say I can't because it's already been registered.