REA Auction - Noting prior work done to cards

[parkplace33]

I found it very interesting that two of the big cards in the current REA auction have information about what was done prior to the card before it was graded.

T206 Doyle (https://bid.robertedwardauctions.com...?itemid=150606)

After much research and consultation, Graphic Conservation Company, a professional art restoration and conservation company with a specialty and focus on all paper items, was selected to handle the project. Weeks of process testing on some of the non-sport cards provided valuable insight into the manner in which the cards were mounted. After perfecting the process, the Doyle was cleanly removed from the page on which it had lived for over 110 years. Graphic Conservation performed no other cleaning or conservation type work on the card, leaving it in virtually the same condition as when it was diligently added to the scrapbook by the original collector. SGC, as part of its grading process, was briefed on the work done to remove the card and reviewed it thoroughly to ensure it met the company's standards for grading.

T206 Plank (https://bid.robertedwardauctions.com...?itemid=150612)

This card originally appeared as Lot 282 in REA's Spring 2010 auction (realizing $32,313), having been consigned by the estate of Charlie Conlon, one of the hobby's truly great pioneer collectors. It should be noted that since the sale of this card it had a moisture stain removed from the top portion of the card.

They didn't have to disclose both... just interesting that they did. Thoughts?