UPDATE. Decided to try AMEND a tax return - browse to the 2018 TR and then it opened and you just do NOT amend. Tested and the data was correct with the TR I completed so it is ready to roll forward to 2019. BUT the third came up with a state issue which has nothing to do with this return and REFUSES to load the return. WHY isn't there a link on the screen to load EXISTING CURRENT YEARS TRs. Common sense would make you think that should be there. Operating systems do crash. People have to reload.
