unable to add Rear camera asbuild issue

hello all, i have rerofitted sync 3 to my 2021 transit custom. I used apim , acm and screen from the same donor car and updated to 3.4. All worked ok other tha GPS does not track correctly. I found a similar spec vehicle and used the asbuild for that now GPS works correctly but cannot get rear camera to work although coded as on, if i revert the asbuild back the camera works but the gps doesn’t. Can any body help?
Apim is - KU5T-14G371-GFA, ACM-H1BT-18C815-VU, ALSO ANY CHANGES ATTEMPTED ON ACM ERROR


SYNC Region: EU

Navigation Variant: Nav

Manufacturer Year: Unknown

Install Type: Retrofit

Old SYNC Version: 3.0

New SYNC Version: 3.4

Do you have a error message, if so what is it?
no

Update Method: Official Ford

How about poating the two asbuilts.

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