Devaluing your pension assets by sharing

Peter@BDM said :"What we have seen is schemes, which, on pension sharing break the salary ­link­ing on the pension debit members pension, even though they remain an active member of the scheme. Net result, the total value (both shares added together) is irrevocably harmed as a consequence of making a pension sharing order! This is why we believe that an assessment of how the order will be implemented should be done in all cases before the order is made."
Please can you tell us how schemes break the salary ­link­ing on the pension debit members pension?
I'm shocked by the idea that both shares of a final salary salary pension shared on divorce might completely lose the "employer's promise" that the pension will pay a given income on retirement.
I'm slowly getting used to the rotten fact that my share was forced out of the defined benefit section by the trustees even though that's not what they said they would do in docs sent to court - but the idea that the trustees/his old firm are also now rid of the responsibility of paying my ex his rightful due of one sixtieth of salary times the number of years he overworked to make them rich....minus my share ...
is unbelievable.
Is it true schemes can do this under current regulations without warning the scheme member in advance?
Why aren't solicitors putting up red flags all round final salary pensions?