Marks disappear after getting 1 out of 20 of Lore Untangler Achievement

If I remove my API key, the marks stay. Is there anything wrong with the XML data? Here is the XML data:
<OverlayData>
<MarkerCategory name="tw_guides" DisplayName="Tekkit&apos;s Guides">
  <MarkerCategory name="tw_hot" DisplayName="Heart of Thorns">
    <MarkerCategory name="tw_hot_td" DisplayName="Tangled Depths">
      <MarkerCategory name="tw_hot_td_loreuntangler_hologram" DisplayName="Lore Untangler" achievementId="2579" mapDisplaySize="30" iconFile="Data/TekkitsWorkshop/HoT/TangledDepths/tw_hot_td_loreuntangler_hologram.png" iconSize="0.5" heightOffset="0.5" minSize="10" fadeNear="10000" fadeFar="10100" behavior="4" resetLength="600"/>
    </MarkerCategory>
  </MarkerCategory>
</MarkerCategory>
    <POIs>
        <POI MapID="1045" xpos="492.528" ypos="-36.2958" zpos="77.6057" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="6+mc8w75V0KOuXObPl8tJQ=="/>
        <POI MapID="1045" xpos="412.423" ypos="-35.4898" zpos="166.304" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="g4RGsEq+VE2UGYl6L6iisA=="/>
        <POI MapID="1045" xpos="594.996" ypos="150.097" zpos="21.9378" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="B8ptZOeOuUWxgBxWXRYGOg=="/>
        <POI MapID="1045" xpos="605.177" ypos="118.296" zpos="71.5238" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="pVfZ/c8M20WuY3lPx+5emg=="/>
        <POI MapID="1045" xpos="496.171" ypos="149.5" zpos="-27.8455" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="DSXcaifGkUmJc1iuLO+nIg=="/>
        <POI MapID="1045" xpos="519.555" ypos="103.4" zpos="-16.3522" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="5cEgNER/40KvFKRw79qClg=="/>
        <POI MapID="1045" xpos="470.884" ypos="35.9668" zpos="54.8526" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="2QRi6FjBhEy0cGlrRmSjCQ=="/>
        <POI MapID="1045" xpos="546.903" ypos="71.5955" zpos="24.1457" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="Sl7Wq7xM/0G2pKPcGjuEAA=="/>
        <POI MapID="1045" xpos="423.115" ypos="103.134" zpos="-11.3907" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="JyOvE/J7SESAeJwfHiyvBg=="/>
        <POI MapID="1045" xpos="343.538" ypos="47.4226" zpos="15.9602" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="qNSKjCMd80WLJ9FxuMw+BQ=="/>
        <POI MapID="1045" xpos="413.899" ypos="16.1655" zpos="-2.87712" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="b+vIDDIy40aV6wUTUVO0cg=="/>
        <POI MapID="1045" xpos="461.937" ypos="77.6633" zpos="89.5317" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="MBkaqqtsbUq3nh8fwNY9Iw=="/>
        <POI MapID="1045" xpos="456.614" ypos="35.4468" zpos="194.388" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="NQmcoVR+rkWkIMwoV+2pfg=="/>
        <POI MapID="1045" xpos="331.601" ypos="36.1176" zpos="153.349" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="uDRgLMBcj0i1LGbUnhxBMw=="/>
        <POI MapID="1045" xpos="527.008" ypos="108.279" zpos="195.525" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="aJ/dqQzhYUCP0E+reGtYBw=="/>
        <POI MapID="1045" xpos="440.163" ypos="151.705" zpos="219.153" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="t7BEmZlL2kyS1MjeIcDjyA=="/>
        <POI MapID="1045" xpos="583.758" ypos="136.598" zpos="125.702" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="UEqbyTWecUOLGwOFi7y9eA=="/>
        <POI MapID="1045" xpos="406.873" ypos="138.142" zpos="123.516" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="qj7qT0/+ZUKvIB55HlPr6g=="/>
        <POI MapID="1045" xpos="413.005" ypos="94.6507" zpos="150.554" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="GaC6pwThSEiCOTqcKFJFWQ=="/>
        <POI MapID="1045" xpos="309.583" ypos="139.376" zpos="38.4228" type="tw_guides.tw_hot.tw_hot_td.tw_hot_td_loreuntangler_hologram" GUID="jrSvUUZ1jEuXjw99d1Yurw=="/>
    </POIs>
</OverlayData>
BoyC / GW2TacO

Marks disappear after getting 1 out of 20 of Lore Untangler Achievement #70
