How to convert saved file for r4 to r4i

recently i upgraded my r4 to r4i . may i know how do i convert the saved files for games because i cannot find them in the r4i.please help

Have you tried http://www.shunyweb.info/convert.php ?
Also try reading the common issues thread next time. --> https://www.romulation.org/forum/index.php?topic=1462.0

The save files should be backwards compatible with each flashcart's firmware, if not, try the converter site linked above.