Experimenting with the new efile rules for amended federal returns. When I check the box to file an amended 2019 return,  I get met with "cannot electronically file except for 2019." But I am using a 2019 return for this experiment. Am I correct that the Proseries Basic program is not yet ready for prime time amended efile?

On another topic, I have been getting messages that internet explorer is no longer supported by Microsoft. Will this be a problem for 2020 Proseries?