What you describe can be caused by Navigraph's NavData updates. Because load order cannot be dictated in our sim, the best approach to this is to delete the following file:
USERNAME\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache\Packages\Community\navigraph-navdata-base\scenery\fs-base\scenery\0302\APX26180.bgl
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