Can I refile a 2018 T1 that has been carried forward to 2019?
I carried forward my 2018 T1 in to 2019 this evening and paid the "one-pay" fee then saved it as a 2019 T1. Then I discovered a mistake in the 2018 T1 (missing some RRSP contributions). I need to refile the 2018 T1 (I have the original assessment from CRA which matched my original filing). Can I refile the 2018 T1 given that it has already been carried forward to 2019? Will I lose the 2019 T1 that I already prepaid?