GPIO_65 / P8_18 on Beaglebone Green Wireless

Hi, I have an existing custom cape and application and I’m using the latest image (10.3 from Everything runs fine on the Black Wireless however moving it to the Green Wireless I get a pin clash on GPIO_65 / P8_18. According to the Seeed Studio Wiki (GW on Wiki that pin should be clear as it is on the Black Wireless. Do you have any information about what that pin is used for / how to disable its existing usage? Thank-you, Neville