Complex sentence: UNHCR's 2001 report says that gender reassignment operations are performed frequently and openly in Iran, and that homosexual and crossdressing people would be safe as long as they keep a low profile.
Split into simpler sentences: UNHCR's 2001 report says that gender reassignment operation is performed frequently and openly in Iran. And homosexual and crossdressing people would be safe as long as they are stay in low profile.