Britney Spears' parents over her conservatorship rages on.In recently filed court documents obtained by ET, the law firm Holland & Knight, which represents Britney's father, Jamie Spears, is asking the court to overrule an objection filed by the singer's mother, Lynne Spears, on her daughter's behalf.Lynne recently filed an objection contesting the legal attorney fees Jamie Spears has requested amid Britney's ongoing conservatorship battle.