Hello,
Peraps is me who use the tool for something not really perfectly, but when i had comment in an image it's happen sometimes i had made an mistake in the choice of the word.
So i look at what i had read a rewrite it.
The plugin history when we had text doesn't allow (or i doesn't find yet the button) to erase the first comment without delete the second one...
So it's not really effective for me.
I think it's possible to use scan to do it but i like ergonomic tools.
Thanks for the reading !