Hello! When amending a return (which needs to be mailed), does Turbotax save the return or is the only saved return is the one that gets electronically filed?

I amended a return (2019), mailed it in, but it hasn't been processed and I was told to called and have a copy of the amended return. I sent in the only copy I printed out. I faxed in a request to a tax advocate for this situation, but I don't know if I will get help with this.