What happens?

[Deafman35]

There are rummers on 2nd & 3rd and one out. Fly ball to centerfielder there are now two outs,players on both teams leave field of play. You and your partner assume don't tell don't ask position. The team that was on base starts out to the field to begin warmups for next inning. They then realize there was only two outs,so you then put runners back where they were at the last out. Then the inning gets finished. Anything to do besides preventive umpiring? Also the scene would have been different had there been scenario had there been an appeal play after players leave the field of play. Then you could do something different right? But what about the play with the one out becoming three outs anything to do?