Tennis - Counting Games Completed

[AngelsWithDirtyFaces]

I'm pondering a solution for when a guardian automation file is applied to a tennis market AFTER a set(s) has already been completed:

Is there a way to disambiguate a previous set winning margin of 2 games between 6-4 and 7-5?

All of the other set winning margins are easy to establish the previous set score.

I'm just trying to figure out a way of ascertaining the correct number of games completed so far in the match when the baf file is applied late.

Cheers
Steve