Electronic – PIC24FJ64GB002 UART Bridge

I work in a project but I have a problem.

I want make a program what drive the two UART in a PIC, each UART at different baud rate. The idea is take a signal for UART1(9600 bauds) and send to UART 2 output (1200 bauds). In the moment i make a code to drive the two UART.

I attach the code, and this have comments in echo test, and the uart´s run ok, when i put data in uart 2, this data is ok in output to UART 1, but, when i want put data in UART 1, to see this data in output of uart 2, i lost many data, by different baud rate. I hope make me understand, my problem is the lost of data from high baud rate to low baud rate, i expect your opinion about how resolve this.

#if defined (__PIC24F__)
#include <p24FJ64GB002.h>
#endif
#include "xc.h"

_CONFIG4(DSBOREN_OFF & DSWDTEN_OFF)
_CONFIG3(WPDIS_WPDIS)
_CONFIG2(POSCMOD_NONE & OSCIOFNC_OFF & FNOSC_FRC & PLL96MHZ_OFF )
_CONFIG1(FWDTEN_OFF & JTAGEN_OFF)

 int c,D;


int main(void){


    //OSCILLATOR CONFIG
    OSCCON=0X0000;          //
    CLKDIVbits.RCDIV0=0; //clock divider to 0

    //PIN CONFIG

    AD1PCFGL=0XFFFF;            //ALL PINS DIGITAL
    TRISA = 0X0000;                  //PORT A OUTPUT
    TRISB = 0XFFFF;                  //PORT B INPUT

    RPOR2bits.RP5R=3;           // RP5  TX UART1
    RPOR3bits.RP6R=5;           // RP6  TX UART2

    RPINR18bits.U1RXR=0;        //RP0  RX UART1
    RPINR19bits.U2RXR=2;        //RP1  RX UART2

    //----------------------------------------------------------------------------

    //UART CONFIG

    U1BRG=103;
    U2BRG=832;

    U1MODEbits.UARTEN = 1; // UART Enable
    U1MODEbits.USIDL = 1;// Stop in Idle Mode Bit
    U1MODEbits.IREN = 0; // IrDA Encoder and Decoder Disabled
    U1MODEbits.RTSMD = 1; // UxRTS in SIMPLEX mode
    U1MODEbits.UEN = 00; // Tx and Rx pins are used,UxCTS,UxRTS, BCLK are controlled by port latch
    U1MODEbits.WAKE = 0; // Wake up disabled on sleep mode
    U1MODEbits.LPBACK = 0; // Loopback is disabled
    U1MODEbits.ABAUD = 0; // Baud rate measurement is disabled
    U1MODEbits.RXINV = 0; // Idle state is '1'
    U1MODEbits.BRGH =1; // High baurdate selected
    U1MODEbits.PDSEL = 00 ; // No parity, 8bits
    U1MODEbits.STSEL = 0; // 1 Stop bit

    U2MODEbits.UARTEN = 1; // UART Enable
    U2MODEbits.USIDL = 1;// Stop in Idle Mode Bit
    U2MODEbits.IREN = 0; // IrDA Encoder and Decoder Disabled
    U2MODEbits.RTSMD = 1; // UxRTS in SIMPLEX mode
    U2MODEbits.UEN = 00; // Tx and Rx pins are used,UxCTS,UxRTS, BCLK are controlled by port latch
    U2MODEbits.WAKE = 0; // Wake up disabled on sleep mode
    U2MODEbits.LPBACK = 0; // Loopback is disabled
    U2MODEbits.ABAUD = 0; // Baud rate measurement is disabled
    U2MODEbits.RXINV = 0; // Idle state is '1'
    U2MODEbits.BRGH =1; // High baurdate selected
    U2MODEbits.PDSEL = 00; // No parity, 8bits
    U2MODEbits.STSEL = 0; // 1 Stop bit

 //------------------------------------------------------------------

    //CONFIGURACION DE TRANSMISION, RECEPCION E INTERRUPCIONES DE LAS UART

    U1STAbits.UTXINV = 0; // UxTX idle state is '0'
    U1STAbits.UTXBRK = 0; // Sync Break Disabled
    U1STAbits.UTXEN = 1; // UART1 Transmitter  is enabled
    U1STAbits.URXISEL = 00; // Interrupt flag bit is set when a charater is received
    IEC0bits.U1TXIE = 0; // Disable UART1 Tx interrupt

    U2STAbits.UTXINV = 0; // UxTX idle state is '0'
    U2STAbits.UTXBRK = 0; // Sync Break Disabled
    U2STAbits.UTXEN = 1; // UART2 Transmitter  is enabled
    U2STAbits.URXISEL = 00; // Interrupt flag bit is set when a charater is received
    IEC1bits.U2TXIE=0;      // Disable UART2 Tx interrupt

         while(1){
//         //ECHO TEST UART 2 1200 BAUDS
//         //wait for byte
//         while(!U2STAbits.URXDA);
//         c=U2RXREG;//get byte
//         //wait for empty spot in transmit buffer
//         while(U2STAbits.UTXBF == 1);
//         //echo received character back
//         U2TXREG = c;


////         //ECHO TEST UART 1 9600 BAUDS
//         //wait for byte
//         while(!U1STAbits.URXDA);
//         D=U1RXREG;//get byte
//         //wait for empty spot in transmit buffer
//         while(U1STAbits.UTXBF == 1);
//         //echo received character back
//         U1TXREG = D;

//TEST TO PUT UT DATA FROM UART 2 1200 IN OUTPUT UART1 9600, ITS PART IS OK

         while(!U2STAbits.URXDA);
         D=U2RXREG;//get byte
         //wait for empty spot in transmit buffer
         while(U2STAbits.UTXBF == 1);
         //echo received character back
         U1TXREG = D;

         }

    return 0;
}