Use stable installation identity to distinguish a likely domain migration from a separate installation.
A domain change should not automatically look like license sharing.
When the stable installation identity remains the same and the host changes, Key can describe the relationship as a probable migration. If identity differs or is missing, it asks for review instead of guessing.
Decision style
Explain the evidence first. Do not silently consume another site allowance because a customer moved hosts.
Migration outcomes
Same hostNo move detectedUnchanged
New host + same identityStrong move signalProbable migration
New host + different identityLikely separate installationReview
New host + no identity proofNot enough evidenceReview