1. … con vuelta
= … with a turn
This command only indicates a turn, and it may be performed differently depending on the other command it is combined with.
If the command is combined with one of the regular figures with a partner change (in abajo direction), it is most commonly only the men making a backward turn clockwiste on 7. This goes for a number of combinations, like: enchufla con vuelta, pelota con vuelta, dame una con vuelta, dame dos con vuelta, la prima con vuelta, etc.
The command is also combined with Echevarria, which contains no partner change. In Echevarria con vuelta both the man and the woman makes a turn on 5-6-7, the man counter clockwise and the woman clockwise.
More about add-ons.