Snapshots for multiple bands with Snapshots?

[thirdrailrecording]

Hello,
I have an event coming up with multiple bands and house provided Profiles for FOH and Monitors. I need to switch between bands using Snapshots as opposed to loading new Show files, because there is a DJ and emcee between acts and I cannot have interruption in the audio. If the bands' Show files were provided beforehand, is there a way to "merge" 2 Show files that each include individual Snapshots together?
For example:
Show File - "The Show"
Snapshot 1 - Band A Song 1
Snapshot 2 - Band A Song 2
Snapshot 3 - Band A Song 3
Snapshot 4 - DJ
Snapshot 5 - Band B Song 1
Snapshot 6 - Band B Song 2
Snapshot 7 - Band B Song 3

Thanks,
Jimmy Turner
Third Rail Productions Inc