it depends on how you set it up. If you set up a top client that got all the time that should be split and then two sub clients, you can put the time on the sub client and it will not be split. 

it depends on how you set it up. If you set up a top client that got all the time that should be split and then two sub clients, you can put the time on the sub client and it will not be split. 

Caren is correct.

If the slip that should not be split is on the Primary Client participating in the split billing, it will be split.  If the slip is for the Secondary client in the rule, you can enter the slip on the secondary client and it will be billed to them exclusively.

I'm unclear from your message as to whether there are still slips that need to be split between both, or if they are no longer being split at all.  In the latter case, you can delete the split billing rule altogether and you can enter slips on each as separate entities.