Key legal question
Whether the reduction of the full invalidity pension to a three-quarter pension was sufficiently established on the medical evidence.
Extracted holding
The medical file was incomplete and contradictory; a further examination in Switzerland was required before the pension entitlement could be reassessed.
Extracted reasoning
The reports did not provide a coherent and fully substantiated basis for assessing any change in health status or work capacity. The authorities could not rely solely on file reports, and the duty to investigate was violated.