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1. If Device is connected to AP in WPA3-PSK mode, AP switching security to WPA2-PSK causes connection failures even after reset. Fix is to not store WPA3's PMK in NVS for caching. 2. AP switching back to WPA3 causes even more connection failures. This is due to device not clearing Supplicant level PMK Cache when it is no longer valid. Fix is to clear the Cache when 4-way handshake fails and to check Key Mgmt of Cache before using. 3. When AP switches from WPA3 to WPA2, device's PMF config in Supplicant remains enabled. This may cause failures during 4-way handshake. So clear PMF config in when PMF is no longer used.