TPS23881: False Detection and classification in semi auto mode even when POE power is OFF

Hi,

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1136055/tps23881-with-0x7-firmware-version-we-are-not-receiving-interrupt-when-pd-is-connected-back-in-semi-auto-mode/4220080#4220080

As per the procedure suggested in above link for powering PD in Semi Auto mode, we have implemented writing 0x80 on 0x1a. Which clears interrupt register, event registers and releases the INT pin.
we have implemented writing 0xff on 0x14 to re enable the detection and classification before releasing ISR.

We are facing a new problem with the this implementation as below, 

DET  status shows valid detection and CLS classification shows class 2/class 4 (0Ch to 0Fh) , even when poe power is OFF (19h) after the above setting(reset register and det and cls register settings).

Note: 0C-0F DET and CLS status is 0 when its powered off and 0x14 register is set already. 

Because of which we are still showing false classification and detection status even when port is powered OFF like below.

PoE port operational status.................... Down
Detection status............................... Signature good
Classification status.......................... Class-2
Power consumption status(watts)................ 0.0

Could you please suggest the correct procedure to avoid this False Detection and classification. 

Regards,
Charan.