I don't think you can swap regulators between alternators without some knowledge of the configuration of the alternator and the regulator.

In the EPC I'm seeing that some regulators have to be used with certain alternators so mixing and matching might bring unpredictable or undesirable results?

If you send me the VIN I can lookup what the MB part number of the correct alternator and regulator is supposed to be for that VIN. I don't think that's really going to help much though because you have a Bosch re-manned alternator and there isn't any cross-reference in the EPC for Bosch re-manufactured products.

I would run the alternator test on one of your other CDI's and see if it passes. Given the flakiness of the bootleg SDS systems I'm not sure I'd take your SDS test generated results as gospel.

Are you still getting the N14/2 unable to communicate with the Glow plug controller error? If I were in your shoes I'd zero in on that issue before proceeding with other diagnosis. If the N14/2 error was still there I'd disconnect the alternator LIN wire and see if the N14/2 error went away. That would confirm that the new alternator isn't correct and is taking down the LIN bus communications with the glow plug controller.

__________________
98 Dodge-Cummins pickup (137K)
13 GLK250 (157k)
06 E320CDI (341K)
16 C300 (89K)
82 300GD Gelaendewagen (54K)