2005 BMW X5 Rear end collision repair

Hello!
My question was:

2005 BMW X5 6 cyl Four Wheel Drive Manual 32000 miles

Is there any written repair documentation, spec, etc. To show that, after a rear-end collision, as a safe repair practice, the rear impact absorbers need to be replaced by default, as once compromised, they cannot warranty anymore the safery of the body and passengers in a subsequent rear-end collision?

The response was also a question:

Dr. Hagerty, Certified 2CarPros Master Technician
(514) Give Feedback | Votes: 9

Yes. Are you asking for me to give you the BMW statement or just a general rule of thumb?

Thanks for the response, yes, I'd appreciate:
- The general "rule of thumb"
- The specific BMW position
- A documentation/procedure/spec to substantiate the above, ideally issued by BMW

Thanks for your reply,
pnnco

Thanks for the prompt answer. At this point there is not yet an issue of leagal action but rather a technical, safety issue.
A BMW document to show that replacing the impact absorbers is part of the repair procedure or the impact absorbers are part of a repair kit for rear end collision - would be of great help to me. If it is even more specific - for 2005 X5, that would be even better.
Please take you time.
Regards

I am getting closer to the point in time when I would need to substantiate my position (see original Question) with a specialists' documented answer, be it a CarPros opinion or "rule of thumb", a BMW repair spec or procedure (important!), NHTSA or IIHS articles on the subject, etc. Or all of the above.
Very obliged.

Thanks, it appears that the answer, that I really need now, if it truly exists, will not be delivered without a payment. Is this the case?

Hello Dr. Hagerty,

Now I am really in need of the answer if such thing exists.
If it does and you are willing to help, please formulate it around my content of the original question in my first message, but in a separate e-mail, not in a forum.
If not, or if you need to be paid, please say so, as I asked you before, so I know where I stand, and get myself rid of the label "likes to hang around!"

Thanks,
Petru Nitescu

Hello Dr. Hagerty,
I am in conflict with an insurance company who refuses to consider the safety aspect of the repair, i.E. The impact absorbers. I had them always replaced in the past rear collision events involving other cars, w/o any argument from whomever was then the insurer.
As I mentioned previously, in absence of a BMW repair procedure, a "2carpros" professional opinion would help.
If you are willing to help, please formulate it around the wording of the original question in my first message, but in a separate e-mail, not in a forum.
However, if your opinion is not available shortly, it will be too late for me to utilize it.
Thankful for your attention,
Petru Nitescu