Mооnst@r
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You need to run a search through all the files to find the required image and its links. For these purposes, I use the ancient AVSearch; I haven't found anything better (it searches for text in files including archives, and in binary files).
Probably, those small caravan portraits were made for nothing, while two were added to the file - x128 and x64. Now it only shows x128, like for creatures, heroes, and war machines.
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You see, I have his mod embedded with a fix for the icon display in the Dungeon altar. And so I'm wondering if it makes sense for me to dig around and somehow remove it from my large collection and install yours instead?