Key legal question
Whether the experts from Zentrum X were biased and their 29 March 2012 report unusable
Extracted holding
No objective indications of bias were shown; the need for a renewed examination after completion of the file did not justify recusal.
Extracted reasoning
The file had been completed for the third assessment; the missing records were attributable to the administration, not to the experts. No serious procedural misconduct or inadmissible expert behavior created an appearance of partiality.