Why has NASA et al MESSED with this old CTX photo of an anomalous object??

[ArMaP]

Well ArMaP, we do view things quite differently.

In that we agree.

IMO the term "irrelevant" does not accurately describe the changes that have been made to the original CTX photo. Nor does the term apply to the now significant differences in the look of this anomalous disc feature seen clearly in the original CTX photo and in the HIRISE photo.

Sometimes I think that people would understand me better if I wrote in Portuguese, as when I write in English people answer about a completely different thing.

What I said was irrelevant was the HiRISE image. When you have two different versions of the same photo, talking about a third photo is irrelevant.

This CTX photo has been modified, and the anomalous feature is significantly less obvious/less seeable!! 

No, the original CTX photo was not modified, and that's one of the reasons I prefer to look at the original photo and not at the "browser" versions.

As you can see on this Internet Archive version of the page, from May 2012, and as I said above, they changed that site some time ago, you can even see that the context image was "upside down" when compared to how they show it now.

One thing they changed was the image they use in that "zoom box", now they use the original, map-projected photo, while before they used a lower resolution, processed version, sometimes not map-projected (if I'm not mistaken).

Another thing they changed is that IAS Viewer was replaced by HiView, which is not as good as IAS Viewer, but this was discontinued by its makers, ITT.

If, when you first found the image, you had downloaded the IMG file you would see now that the original photo wasn't changed.

PS: I find it interesting to see that you think that things look less anomalous when the images are changed, I interpret the two images in exactly the same way.