Legal Question in Family Law in California

Only if it is for an improper purpose, or not warranted by the facts and law applicable to the situation, or is being done instead of filing a motion for reconsideration or an appeal instead of a new filing based on changed circumstances.

Parties who continually file the same motion all the time can be sanctioned by the court.

If the determination of income is in flux and changes of circumstances continue to present themselves, then it's quite possible that there would be a need to return to court on a number of occasions.