92 WC Semi Final didn't use D/L method. And the reason they went from 22 runs in 7 balls to 21 runs in 1 ball wasn't because they protested, but because they lost about an over's worth of playing time due to rain, and the prevailing method for such calculations in Australia at the time determined 21 runs in 1 ball.
sirkaar.. I know it was not D/L in 92 WC.. however,, the score first was 22 required off 13 balls, which got reduced due to the rain to 22 off 7 balls, then SA protested and the committee gave them the new target of 22 off 1 ball...
you can verify with any other senior or other sources..thanks..