We lived under the Custody/Visitation/Support CO for the first 16+ years of our marriage. DW lived under the initial CO for a year before we met.

We had it all. Thousands of pages of documentation, Dozens of hours of recorded telephone conversations and V-mails  with and left by the SpermClan, Much of that vitriolic rants and attacks on my DW by SpermGrandHag. Court recordings broken down into typed transcripts with their lies highlighted and cross referenced to the supporting documentation and proof of their lies.  The Skid's Pediatrician reports on his pre-departure condition (clean, healthy, happy, conversant, etc....) and his neglected state upon return from SpermLand visitation (extreme BO, black sludge under his harms, inside his elbows, behind his knees, around the skin under his waist band, being in an obviously multiple day old loaded and soaked diaper, puss filled welts all over his butt cheeks, a raw bleeding anus from insane diaper rash, quarter in long finger and toe nails, florecent yellow teeth, etc, etc, etc...). PI reports and video of the SpermIdiot taking under the table payment for off books plumbing jobs he was doing to hide income and reduce  his CS obligation. The SpermIdiot's arrest records, gang affiliations, etc... SpermGrandPa's daliences with his mistress. The SpermIdiot's tax returns, employment, and income information, etc, etc, etc..... Statements from SS's teachers and school counselors on the cyclical changes related to his visitation schedule, etc.....................................................................................

Their lawyer (of the moment)  and the Judge (of the moment)  would cringe when we would walk into court with a couple of file boxes of information all extremely organized, collated, cross referenced, with a tape player on top of the box for reviewing recorded conversations, V-mails, court recordings, etc, etc, etc.... Never pick a fight with a scary smart CPA who is in protect her kid mode and has a high income DH who has her back and the Skid's back. 

I cannot even estimate the number of times someone on our side played the "Your Honor, that is not entirely accurate" card followed by entering a document into the record, listening to a tape recording, etc.............. 

Invariably the SpermIdiot, SpermGrandHag, or whoever was testifying would erupt with "That isn't fair!" when we played conversations or presented a document of them saying, ranting, writing, etc... something they just told the Judge had never happened, they had never done, or never said.

We kept everything for the entire 16+ years under the CO and moved it with us a couple of times in the few years after SS aged out from under the CO.... just in case.

Their attorneys more than once just sat down and tossed their pen on the table when our attorney would stand up to start dissecting their bullshit while DW just kept sliding the lawyer the evidence that bared their asses.  I was always excluded from the courtroom as a witness. Their attorney would always move to exclude witnesses from the court room because the SpermIdiot did not want his GPs, mommy, dad, sister, BIL, etc..... to know the shit he was up to.  I would exit the witness holding room and observe through the glass panels in the doors to the courtroom. That was some extremely entertaining stuff.

When we had telephone hearings I was still always excluded but... a muted speaker phone took care of that crap.  When they would move for me to be excluded we would move for SpermGrandHag to be excluded and the SpermIdiot would freak out to lose his mommy.  Our last telephone hearing was during one of SS's SpermLand visitations and you could hear SS and his three younger SpermIdiot spawned half sibs running around the room playing.  I whispered in my DW's ear to make the Judge aware of that. Her honor ripped the SpermIdiot and SpermGrandHag a new asshole for that one after my DW demanded that her son not be anywhere he could hear or see what was going on during the telephone hearing.

Have fun!!!!!!