It's necessary to update the Harmony hub firmware by SD Card to pair an old A9MEM1580.
Load ZIP file by this link: ZBRNx_FW3.32_IndusV0003_GPV2.02
Check "Release note" in the attached ZIP file, to install this new version inside the ZBRN.
It is normal that the sensor (A9MEM1580) can be paired one time with ZBRN without a new ZigBee radio brick . When you try to connect with another Harmony hub, you shall have to upgraded the new ZigBee radio brick inside the ZBRN to accept the sensor.
The new package needed is ZBRNx_FW3.32_IndusV0003_GPV2.02 to accept a new sensor (A9MEM1580) pairing.
Please follow chap: 5 particularly the update of the radio ZigBee brick, see in attachment.
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Related information.
To unpair the PowerTag AMEM* > Follow this process:
Unpairing power TAG A9MEM*
1. Remove the sensor in the Harmony hub;
2. The power tag switches into slow Red blinking;
3. Wait until the power tag switches into the fast red blinking mode;
4. Switch off the power tag;
5. When you power on the power tag, it will turn into the slow yellow blinking mode, indicating it is available for a new pairing.