TournamentSR doesn't directly support winners of a Round-Robin bracket being placed into a placing bracket.  On the other hand, you can use two tournament files to achieve the desired effect.
1) Create a tournament file with the Round-Robin brackets.  Make sure it has all of the weight classes you'll be using (e.g. two Round-Robin brackets for 113 would be something like 113-A and 113-B.
2) Create another tournament based on the file created in 1).  Change the bracket types if needed.
3) When the all matches from the Round-Robin brackets have completed, export the placers ("File", "Export placers in plain text").
4) Import the placers created in 3) to the tournament file created in 2).  You will need to manually rearrange wrestlers 113-A and 113-B to ensure the match ups you desire (or you could edit the placers file created in 3 using a text editor to put the desired wrestlers under the correct target weight class).
5) If you want to carry over the team scores from the Round-Robin tournament file, print the team scores at step 3 ("Print", "Team scores") and then manually enter each team's base score into the "Team list" window's "Initial score:" field.
6) Run the tournament created in 4) and 5).
Steps 4) and 5) can be accomplished within 30 minutes, so it is possible to do this in one day.