I added a T4A amount to my 2023 tax return in error but thought I had caught it and deleted the T4A amount before submitting NETFILE but it wasn't. Can I check history?

The CRA has recently flagged this discrepency and I fear I'm on the hook ($$) for this error that I tried to resolve myself. I don't remember getting any flags through Turbotax either. I'm wondering if the turbotax system glitched when I tried to remove the T4A amount. Has anyone else had a similar experience?