Loading Cargo Locking issue

[bu51ngh]

I have purchased a 2007 sprinter, it was a previously a DPD van so had the slam locks fitted, I have removed them. Now the front cabin locks but the rear does not.

I have opened up the back doors and all wiring etc seems ok.

Can anyone help? Will i need to get locking reprogrammed?

 

[bu51ngh]

Does anyone know, when after market slam locks are fitted, is something disconnected from the main locks.