Leonard Rosenthol writes:

> No, those existing signatures will still show as invalid - HOWEVER  
> the overall signature status will show as green/valid (since the last  
> signature will still be valid).

Hhmm, not good, but at least better than the current state. The worst effect 
actually is the big bar on top stating invalidity. I'll try and re-sign a 
document including the appended pages and show it to my service users. It might 
be at least a work-around for the near future.

> Yes, that's true - the text was correct HOWEVER our user testing &  
> surveys showed that users considered that VALID was valid - no
> matter what changes may have taken place.

Oh well, users... a difficult species to deal with.

> So I sign a contract, and then you add a page with an addendum.   
> Since I did NOT see the addendum, my signature is NOT valid on teh  
> document...Simple as that.

I'm afraid we can find analogies in paper where the signature is not 
invalidated (additional information not part of the contract but kept together 
for easier lookup). The Acrobat 9 products are optimized for some use cases 
rendering them less useful for other use cases for which former versions have 
been used for quite some time, too. Unfortunately for me I'm involved in the 
latter ones, that's all.

I actually would consider using portfolios for the job (containing the original 
document and a second one containing only the additional pages) if there wasn't 
a necessity to remain PDF/A compliant for some users.

Maybe I will have to offer a wide variety of modes creating different outputs 
depending on whether the original documents are signed or have to remain PDF/A 
compliant.

Regards,   Mikel.
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