"I should have used the whole word. Preperation step .From a standing position step forward with the left foot, the lowering on the RF will be different in waltz than in foxtrot. The body"s path declines between the first and second step in waltz."

You are going to generate endless confusion if you refer to the prep step as the first step - you need to call it the prep step, step 3, or step 0, associating either the cardinal or ordinal "1" with it is verboten.

There is a lowering action between the prep step and step 1 in all of the swing dances. There may be slight variations in it, but its grossly similar across the board. There is not a lowering action between step 1 and step 2 in any characteristic swing dance figure.