Zero coordinate don't filtered

Hello, I make a new configuration an three days ago. And zero coordinates don't be filtering. See my config on /conf/DEFAULT.XML

    <entry key='filter.enable'>true></entry>
    <entry key='filter.distance'>50</entry>
    <entry key='filter.skipLimit'>1200</entry>
    <entry key='filter.zero'>true</entry>
    <entry key='filter.invalid'>true</entry>
    <entry key='filter.future'>300</entry>
    <entry key='filter.duplicate'>true</entry>
    <entry key='filter.skipLimit'>60</entry>
    <entry key='report.trip.minimalTripDuration'>300</entry>
    <entry key='report.trip.minimalTripDistance'>100</entry>
    <entry key='report.trip.minimalParkingDuration'>300</entry>
    <entry key='report.trip.greedyParking'>true</entry>
    <entry key='report.trip.useIgnition'>true</entry>
    <entry key='filter.maxSpeed'>250</entry>
    <entry key='coordinates.filter'>true</entry>
    <entry key='coordinates.minError'>50</entry>
    <entry key='coordinates.maxError'>300000</entry>
    <entry key='database.historyDays'>60</entry>

Why do you need skipLimit? This might be the problem.

I have thinked that be a plus of configuration. I will try remove!

I had removed, but he don't remove the ZERO coordinates, see my new config:

    <entry key='filter.enable'>true></entry>
    <entry key='filter.distance'>50</entry>
    <entry key='filter.skipLimit'>1200</entry>
    <entry key='filter.zero'>true</entry>
    <entry key='filter.invalid'>true</entry>
    <entry key='filter.future'>300</entry>
    <entry key='filter.duplicate'>true</entry>
    <entry key='report.trip.minimalTripDuration'>300</entry>
    <entry key='report.trip.minimalTripDistance'>100</entry>
    <entry key='report.trip.minimalParkingDuration'>300</entry>
    <entry key='report.trip.greedyParking'>true</entry>
    <entry key='report.trip.useIgnition'>true</entry>
    <entry key='coordinates.filter'>true</entry>
    <entry key='coordinates.minError'>50</entry>
    <entry key='coordinates.maxError'>300000</entry>
    <entry key='database.historyDays'>60</entry>

This values is incorrect:

<entry key='filter.enable'>true></entry>

Does anyone have the link where it has this in the documentation?

https://www.traccar.org/configuration-file/