Castilian policy reversed itself, forbidding migrations it later made compulsory.

Evidence

The small illegal migration of 1517 already mentioned was a curious anticipation, in the reverse direction, of the mingling of crypto-Muslims from the former Muslim Kingdom of Granada with crypto-Muslims of Mudejar origin in various parts of the interior. This was to take place after the much larger population transfers that were enforced more than forty years later by the authorities in the aftermath to the Second Granadan Rebellion (such were the vagaries and fluctuations of Castilian policy, what was at one stage strictly forbidden became at a later stage obligatory). — L. P. Harvey, Muslims in Spain, 1500 to 1614, 399

Categorization

• QUESTION: Why did Castilian policy flip from forbidding southward Muslim migration to later enforcing it as obligatory population transfer? Worth chasing the internal politics of that reversal.