I had been doing that, then received a letter from the IRS from my 2019 taxes a couple of months ago saying i significantly understated my income. I sent them a file explaining it all, basically that I combined w2g's with the same casino and same FEIN. They rejected it. I'm now having to file an amended 2019 return and inputting every w2g separately. It's likely I'll have to do the same when they get around to 2020 taxes because I combined them by casino and FEIN too.
