if i have a warrant in criminal court and i go to child support court will they pick me up?
probably not but why take chances. take care of the warrant
If the warrant squad knows you have a scheduled court appearance (and you’d be surprised at how often they check these things) you can be sure that they would be there to pick you up. If it isn’t a scheduled court appearance then they would have no way of knowing about it and you could probably dodge the bullet. But why have a warrant hanging over your head? You have a much better chance of a satisfactory disposition of the underlying matter if you voluntarily return than if the haul you back to court (which will probably ultimately happen one way or another).