The first 20 migrations produce nothing for the feedback loop because the corpus is empty — there are no prior reviewed migrations to retrieve. Every policy during cold start relies solely on documentation retrieval and the LLM's general knowledge of both platforms. Accuracy will be lowest here, and human review load will be highest.
The cold start window should be treated as a calibration phase, not a production migration phase. Every migration in this window should receive full human review regardless of confidence score. The goal of the first 20 migrations is not to migrate 20 APIs efficiently — it is to build the ground truth corpus that makes subsequent migrations reliable.