[greymule]

Keep in mind that after a runner misses a base to which he is forced, the force is not removed by the putout of a following runner.

R1, R3, one out. Batter hits safely down the RF line. R3 scores, R1 misses 2B and makes it to 3B. BR is thrown out at 2B trying for a double. The defense then successfully appeals R1's miss of 2B. This third out is still a force play, and R3's run would not count.

On the other hand: R1, R3, one out. BR grounds to F3, who steps on 1B to retire the BR and then throws wild to 2B in an attempt to get R1. R1 misses 2B and makes it to 3B while R3 scores. The defense successfully appeals R1's miss of 2B. This third out is not a force out, and R3's run counts.

I'm sure most posters know this, but given the original questions, I thought these examples might be useful.