If you are having a conference, the outcome depends on agreemnt between you both, IE nothing should change unless you agree to tthe change.. If it is a court Appearance, IE Directions or Interim Hearing, the Juditial Officer, (Judge or Magistrate) can make Interim or pemporary orders. (Note a Registrar does not have the Authority to make orders about the time a parent cares for a child).
If it is a Directions hearing the Judge or Magistrate will usually ask if you are seeing the Children, if your answer is yes, the Judge or Magistrate may decide not to make any children's orders, or conversly you could ask for temporary orders confirming the current arrangements. It. would usually be based on very short verbal submissions.
If it is an Interim Hearing the Judge or Magistrate is supposed to make interim orders (If you have asked for interim orders) based on Affidavit material and short submissions. In the FMC, evidence will not generally be tested at interim, so if there is conflicting evidence, it will not be tested till trial. In the Family Court of Aus, cases concerning children's issues are supposed to use the "Less Adversarial" case management system, which means the Judge can make determinations of Fact at any stage during the trial which officially starts with the interim hearing, though at interim it will usually only be minor matters.
Again, depending on what the mother claims, and how long you have already been sharing care, there should'nt be any reason why you can't get temporary or interim orders confirming the current arrangement.
The late 2006 Full Court Appeal Judgement "Goode & Goode", basicly says that if the presumption of "Equal Responsibility" stays in place, a court is to consider Equal or Substantial time. Though this is less important in your case because you already have a status quo for shared.
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