"Last Time By" in Softball

[RKBUmp]

This case play would seem to indicate USA does not recognize last time by. Does not appear to be a complete description of the play because there would be base awards but it does say the runner would be called out on appeal for not retouching 2nd on the way back to 1st.

PLAY 8.7-14
With two outs, R1 on 1B, B4 hits the ball to F6 who throws over the head of F3 and the ball goes out of play. When the ball left F6’s hand, R1 was between 3B and 2B. R1 returns to 1B but did not touch 2B, instead R1 ran across the infield to touch 1B.
RULING: If R1 returns to 1B without touching 2B and the defense appeals R1 for not retouching 2B on the return, R1 would be called out on the appeal. (8-7G)