[Lapopez]

Originally posted by Atl Blue
From J/R:

If a consecutive runner has been forced to advance by reason of the batter becoming a runner, and he is forced at the moment he misses his advance base, an appeal of that base is ALWAYS a force out. EG: bases loaded, one out. The batter triples. R1 missed second and the batter-runner missed first. First the defense successfully appeals against the batter-runner, then R1. The appeal of the batter-runner does not negate the fact that R1 was forced when he missed the base. R1's appeal out (third out) is also a force out; R2 and R3's runs are negated.

According to J/R, if it was a force when it was missed, it's a force when it is appealed.

This makes more sense to me than the "off base" vs. "force" on the batter runner lingo.