Hey thanks so much for your reply. :)
As a temp workaround that could well be the solution, good thinking and thanks for the suggestion!
Sad/bad news indeed on all fronts, especially re: Aiimages' deprecated status D:
I absolutely love the design of Aiimages, and as a Unity dev I'm still planning to integrate it in to some of my projects. In the Unity space it's still IMHO the best SD tool available, by far, and I've tried them all (except Keijiro Takahashi's recent addition for the Mac folk). Props are due for the work you've put into it!
My waifu is fairly experienced with Python. If you have a sense of what would be involved to scan and rewrite the history file, would you be ok with sharing your pseudo-code thoughts on what steps would be required in Python to achieve the history restoration?
If we have any luck achieving it, we'd of course share the scripts with the community in case anyone else encounters the issue.
Many thanks again Sunija! <3 x