Changing transmission speed on UART1

I’m trying to change transmission speeds back and forth from 57600 to 9600 baud on UART1. I’ve tried calling UartHandler::Init(), changing the config.baudrate, followed by UartHandler::FlushRx() and UartHandler::StartRx(). The receive buffer doesn’t seem to get reset properly; I’m seeing the information that had previously been read at 57600 showing up again when the 9600 baud section of my test code executes, rather than the expected bytes.

I converted the code to DaisyDuino and there it works beautifully - I call Serial.end() then Serial.begin() to change from 576600 to 9600 with reads/writes to a test driver running on an Arduino Mega. Can someone tell me how to do this properly for daisysp? I can post code, if that’s helpful. Thanks.